RISK FACTORS

An investment in the ADSs involves significant risks. You should carefully consider all of the information in this prospectus, including the risks and uncertainties described below, before making an investment in the ADSs. Any of the following risks could have a material adverse effect on our business, financial condition and results of operations. In any such case, the market price of the ADSs could decline, and you may lose all or part of your investment.

Risks Relating to Our Business and Industry

If we fail to retain or grow our user base, or if our users decrease their engagement with our mission critical applications, our business, financial condition and results of operations would be materially and adversely affected.

The size of our user base and our users’ level of engagement are critical to our success. Our business and financial performance have been and will continue to be significantly determined by our success in adding, retaining, and engaging active users. We have been consistently anticipating user demand and developing innovative products and services in an effort to attract and retain users. However, the internet and mobile industries are characterized by constant and rapid technological changes. As a result, users may switch from one set of products to others more quickly than in other sectors. To the extent our user growth rate slows, our success will become increasingly dependent on our ability to increase levels of user engagement and monetization. Our user growth and engagement could be adversely affected if:

Our efforts to avoid or address any of these events could require us to incur substantial expenditures to modify or adapt our products, services, or infrastructure. If we fail to retain or continue to grow our user base, or if our users decrease their engagement with our mission critical applications, our business, financial condition and results of operations would be materially and adversely affected.

We only began to offer and monetize our mission critical mobile applications recently, and there is uncertainty as to whether we can achieve continued growth in, or successful monetization of, our mobile business operations.

A substantial majority of our revenues have been derived from our PC based applications. Although our mobile applications have proven to be highly popular, we have a short operating history and limited experience in the mobile internet industry. We launched our first mobile application, Battery Doctor, in July 2011. Our Clean Master mobile applications were introduced in 2012, and we acquired the Photo Grid mobile application in 2013. We launched our CM Security mobile application on the Android platform in January 2014. The mobile internet industry is characterized by constant change, including but not limited to rapid technological evolution, shifting user demands, frequent introduction of new products and services and constant emergence of new

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industry standards, operating systems and practices. We received and may continue to receive complaints from users regarding our mobile applications primarily regarding privacy settings and certain third-party website promotion activities on our mobile applications. We have not incurred any material costs to address the complaints. If we are unable to address user complaints timely or at all, our reputation may be harmed and our user base may decline. As a result of these factors and our limited mobile internet industry experience, we may not be able to sustain the popularity of our existing mobile applications or introduce new mobile applications that meet the expectations of our users and business partners.

Even if we succeed in continuing to attract a growing user base for our mobile applications, we may not be able to monetize our mobile operations successfully. The mobile internet industry only began to experience rapid growth in recent years, and there are relatively few proven monetization models for us to monetize our mobile traffic. We are currently exploring a number of monetization models for our mobile business. We generate our mobile revenues primarily through mobile advertising and mobile game publishing services. If the mobile advertising and mobile game publishing industries fail to grow as we expect, or if we fail to introduce effective monetization models for our mobile applications, our business, financial condition and results of operations may be materially and adversely affected.

Because a small number of business partners contribute to a significant portion of our revenues, our revenues and results of operations could be materially and adversely affected if we were to lose a significant business partner or a significant portion of its business.

Currently, a small number of business partners contribute a significant portion of our revenues. In 2013, our five largest business partners in aggregate contributed approximately 65% of our revenues, with Alibaba, Baidu and Tencent accounting for 25%, 19% and 14% of our total revenues, respectively. We expect that our top five business partners will continue to contribute a significant portion of our revenues in the near future. If we lose any of these business partners, or if a significant business partner substantially reduces its spending with us, our business, financial condition and results of operations may be materially and adversely affected.

We rely on online marketing for the majority of our revenues, and our profitability and financial prospects may be affected by the revenue sharing and fee arrangement with our business partners.

We generated 17.1%, 73.8% and 81.7% of our revenues, respectively, from online marketing services in 2011, 2012 and 2013. We generate revenues from our online marketing services by referring traffic from our platform to e-commerce companies and search engine providers and by selling advertisements. The revenue sharing and fee arrangement with these business partners are subject to change. For example, our fee arrangement with one of our significant business partners was changed from a pay per click and pay per sale model to pay per sale only model for certain traffic we refer to them, which affected our revenues in 2013. If our business partners reduce or discontinue their advertising spending with us, we fail to attract new advertising customers or the fees we receive for the traffic we refer to our business partners significantly decrease, our business, financial condition and results of operations could be materially and adversely affected.

If we fail to compete effectively, our business, financial condition and results of operations may be materially and adversely affected.

We face intense competition in our businesses. In the internet space, we mainly compete with Qihoo 360 in China’s internet security and anti-virus market. In the mobile space, we compete with other mobile application developers, including those developers offer products purported to perform similar functions as Clean Master and Battery Doctor. In addition, we compete with all major internet companies for user attention and advertising spend.

Some of our competitors have longer operating histories and significantly greater financial, technological and marketing resources than we do and, in turn, have an advantage in attracting and retaining users, advertisers and other business partners. If we are not able to effectively compete in any aspect of our business or if our

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reputation is harmed by negative publicity relating to us, our products and services or our key management, our overall user base may decrease, which could make us less attractive to advertisers and other business partners, and our business, financial condition and results of operations may be materially and adversely affected.

If our mission critical applications fail to address security threats and optimize system performance or otherwise do not work properly, we may lose users and our business, financial condition and results of operations may be materially and adversely affected.

Our users rely on our mission critical applications to optimize internet and mobile system performance and provide real time protection against security threats. Our applications are highly technical and complex and, when deployed, may contain defects or security vulnerabilities. Some errors in our products may only be discovered after a product has been installed and used by our users.

Our mission critical applications for users rely on our cloud-based data analytics engines to optimize system performance and protect against security threats. The data analytics engines include our most up-to-date security threats library and application behavior library in the cloud and our mission critical applications only include a subset of these libraries on the users’ end devices. If our data analytics engines do not function properly, or if the infrastructure supporting the data analytics engine malfunctions, our mission critical applications may not achieve optimal results.

Our cloud-based analytics engines employ a heuristic, or experience-based, approach to detect unknown security threats and behavior of unknown mobile applications. However, new malware and malicious applications are continuously appearing and evolving, and our detection technologies may not detect all forms of security threats or malicious applications encountered by our users.

In addition, our mission critical applications may not work properly with the Windows, Android or iOS operating systems if we cannot promptly upgrade our applications following any changes or updates to these operating systems. We previously experienced system disruption due to compatibility issues resulting from an update to the Windows operating system.

Any of these defects, vulnerabilities or failures may cause security breaches and suboptimal internet and mobile system performance, which could result in damage to our reputation, decrease in our user base and loss of advertising customers, and our business, financial condition and results of operations may be materially and adversely affected.

If any system failure, interruption or downtime occurs, our business, financial condition and results of operations may be materially and adversely affected.

Although we seek to reduce the possibility of disruptions and other outages, our mission critical mobile and PC applications may be disrupted by problems with our own cloud-based technology and system, such as malfunctions in our software or other facilities or network overload. Our systems may be vulnerable to damage or interruption caused by telecommunication failures, power loss, human error, computer attacks or viruses, earthquakes, floods, fires, terrorist attacks and similar events. While we locate our servers in multiple data centers across China, as well as in the United States, Hong Kong and Singapore, our system are not fully redundant or backed up, and our disaster recovery planning may not be sufficient for all eventualities. Despite any precautions we may take, the occurrence of natural disasters or other unanticipated problems at our hosting facilities could result in interruptions in the availability of our products and services. Any interruption in the ability of our users to use our applications could damage our reputation, reduce our future revenues, harm our future profits, subject us to regulatory scrutiny and lead users to seek alternative internet mobile products.

Our servers may experience downtime from time to time, which may adversely affect our brands and user perception of the reliability of our systems. Any scheduled or unscheduled interruption in the ability of users to use our servers could result in an immediate, and possibly substantial, loss of revenues.

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If major mobile application distribution channels change their standard terms and conditions in a manner that is detrimental to us, or terminate their existing relationship with us, our business, financial condition and results of operations may be materially and adversely affected.

We rely on third party mobile application distribution channels such as Google Play and iOS App Store to distribute most of our mobile applications to users. In China, where Google Play is not available, we collaborate with similar local distribution channels to distribute our mobile applications. We expect a substantial number of downloads of our mobile applications will continue to be derived from these distribution channels. As such, the promotion, distribution and operation of our applications are subject to such distribution platforms’ standard terms and policies for application developers, which are subject to the interpretation of, and frequent changes by, these distribution channels. If Google Play, iOS App Store or any of the major distribution channels change their standard terms and conditions in a manner that is detrimental to us, or terminate their existing relationship with us, our business, financial condition and results of operations may be materially and adversely affected.

As most of our mobile applications are created for Android devices, a decrease in the popularity of the Android ecosystem may materially and adversely affect our mobile business.

Most of our mobile applications are created for Android devices. Any significant downturn in the overall popularity of the Android ecosystem or the use of Android devices could materially and adversely affect the demand for and revenues generated from our mobile applications. Although the Android ecosystem has grown rapidly in recent years, it is uncertain whether it will continue to grow at a similar rate in the future. In addition, due to the constantly evolving nature of the mobile industry, another operating system for mobile devices may eclipse Android and decrease its popularity. To the extent that our mobile applications continue to mainly support Android devices, our mobile business would be vulnerable to any decline in popularity of the Android operating system.

If we fail to source suitable third party products, such as online games, on reasonable terms, our IVAS revenues may be materially and adversely affected.

We derive a portion of our revenues from IVAS, which mainly include game publishing services. The success of our IVAS business depends on our ability to source suitable third party products on reasonable terms. For example, we have exclusive publishing or joint operating arrangements for games we publish on our platform. We may not be able to identify popular and profitable games and license such games on acceptable terms. We may incur significant expenses in exclusive game publishing arrangements with game developers if their products prove to be unpopular. Game developers with popular games may discontinue their cooperation with us. In addition, increased competition in China’s game publishing market may negatively impact the fee sharing between game developers and us. Should any of these occur, our business, financial condition and results of operations may be materially and adversely affected.

We have a limited operating history in international markets. If we fail to meet the challenges presented by our increasingly globalized operations, our business, financial condition and results of operations may be materially and adversely affected.

Our business has rapidly expanded internationally since we released our Clean Master overseas version in September 2012 and established KS Mobile Inc. in the U.S. in the fourth quarter of 2012. In March 2014, approximately 37% of our mobile monthly active users were from China, while the remainder were from overseas markets, mostly the United States, Asia (excluding China) and Europe. One of our key growth strategies is to continue our global expansion, which exposes us to a number of risks, including:

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Our business, financial condition and results of operations may be materially and adversely affected by these and other risks associated with our increasingly globalized operations.

Furthermore, Kingsoft Japan Inc., or Kingsoft Japan, a subsidiary of Kingsoft Corporation, currently operates an information security software business in Japan. We do not control, and do not consolidate the financial results of, Kingsoft Japan. Pursuant to the shareholders’ agreement of Kingsoft Japan, to which Kingsoft Corporation is a party, Kingsoft Corporation agreed that it and its subsidiaries, including us, may not compete with Kingsoft Japan in the area of internet security software within Japan. In addition, if Kingsoft Japan were to suffer reputational damage in Japan in connection with its operations, such damage could adversely affect our reputation and business.

We may not be able to prevent unauthorized use of our intellectual property, which could harm our business and competitive position.

We regard our trademarks, service marks, patents, domain names, trade secrets, proprietary technologies know-how and similar intellectual property as critical to our success, and we rely on trademark and patent law, trade secret protection and confidentiality and invention assignment agreements with our employees and third parties to protect our proprietary rights. As of March 31, 2014, within China, we had registered 135 domain names, including www.ijinshan.com and www.duba.com , 96 copyrights, eight patents and 41 trademarks. In addition, we have filed 489 trademark applications and 445 patent applications in China. We have one registered trademark in the U.S. and have filed a total of 329 trademark applications overseas. There can be no assurance that any of our pending patent, trademark or other intellectual property applications will issue or be registered. Any intellectual property rights we have obtained or may obtain in the future may not be sufficient to provide us with a competitive advantage, and could be challenged, invalidated, circumvented, infringed or misappropriated. Given the potential cost, effort, risks and disadvantages of obtaining patent protection, we have not and do not plan to apply for patents or other forms of intellectual property protection for certain of our key technologies. If some of these technologies are later proven to be important to our business and are used by third parties without our authorization, especially for commercial purposes, our business and competitive position may be harmed.

Monitoring for infringement or other unauthorized use of our intellectual property rights is difficult and costly, and we cannot be certain that we can effectively prevent such infringement or unauthorized use of our intellectual property, particularly in countries where laws may not protect our proprietary rights to the same extent as in the United States. From time to time, we may need to resort to litigation or other proceedings to enforce our intellectual property rights, which could result in substantial cost and diversion of resources. Our efforts to enforce or protect our intellectual property rights may be ineffective and could result in the invalidation or narrowing of the scope of our intellectual property or expose us to counterclaims from third parties, any of which may adversely affect our business and operating results.

In addition, it is often difficult to create and enforce intellectual property rights in China and other countries outside of the United States. Even where adequate, relevant laws exist in China and other countries outside of the United States, it may not be possible to obtain swift and equitable enforcement of such laws, or to enforce court judgments or arbitration awards delivered in another jurisdiction. Accordingly, we may not be able to effectively protect our intellectual property rights in such countries. Additional uncertainty may result from changes to intellectual property laws enacted in the jurisdictions in which we operate, and from interpretations of intellectual property laws by applicable courts and government bodies.

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Our confidentiality and invention assignment agreements with our employees and third parties, such as consultants and contractors, may not effectively prevent unauthorized use or disclosure of our confidential information, intellectual property or technology and may not provide an adequate remedy in the event of such unauthorized use or disclosure. Trade secrets and know-how are difficult to protect, and our trade secrets may be disclosed, become known or be independently discovered by others. Despite our efforts to protect our proprietary rights, unauthorized parties may attempt to copy aspects of our website features, software and functionality or obtain and use information that we consider confidential and proprietary. If we are not able to adequately protect our trade secrets, know-how and other confidential information, intellectual property or technology, our business and operating results may be adversely affected.

We may be subject to intellectual property infringement lawsuits which could result in our payment of substantial damages or license fees or adversely affect our product and service offerings.

Third parties may own technology patents, copyrights, trademarks, trade secrets and internet content, which they may use to assert claims against us. Our internal procedures and licensing practices may not be effective in completely preventing the unauthorized use of copyrighted materials or the infringement of other rights of third parties by us or our users. The validity, enforceability and scope of protection of intellectual property rights in internet-related industries, particularly in China, is uncertain and still evolving. For example, as we face increasing competition and as litigation becomes a more common way to resolve disputes in China, we face a higher risk of being the subject of intellectual property infringement claims.

Although we have not been subject to claims or lawsuits outside China, we cannot assure you that we will not become subject to intellectual property laws in other jurisdictions, such as the United States. If a claim of infringement brought against us in the United States or another jurisdiction is successful, we may be required to pay substantial penalties or other damages and fines, enter into license agreements which may not be available on commercially reasonable terms or at all or be subject to injunction or court orders. Even if allegations or claims lack merit, defending against them could be both costly and time consuming and could significantly divert the efforts and resources of our management and other personnel.

Competitors and other third parties may claim that our officers or employees have infringed, misappropriated or otherwise violated their software, confidential information, trade secrets or other proprietary technology in the course of their employment with us. Although we take steps to prevent the unauthorized use or disclosure of such third-party information, intellectual property or technology by our officers and employees, we cannot guarantee that any policies or contractual provisions that we have implemented or may implement will be effective. If a claim of infringement, misappropriation or violation is brought against us or one of our officers or employees, we may suffer reputational harm and may be required to pay substantial damages, subject to injunction or court orders or required to redesign our products or technology, any of which could adversely affect our business, financial condition and results of operations.

Further, we license and use technologies from third parties in our applications. These third-party technology licenses may not continue to be available to us on acceptable terms or at all, and may expose us to liability. Any such liability, or our inability to use any of these third-party technologies, could result in disruptions to our business that could materially and adversely affect our operating and financial results.

Some of our applications contain open source software, which may pose increased risk to our proprietary software.

We use open source software in some of our applications, including our Cheetah Browser, which incorporates Chromium browser technology, and will use open source software in the future. In addition, we regularly contribute source code to open source software projects and release internal software projects under open source licenses, and anticipate doing so in the future. The terms of many open source licenses to which we are subject have not been interpreted by U.S. or foreign courts, and there is a risk that such licenses could be construed in a manner that imposes unanticipated conditions or restrictions on our ability to sell or distribute our applications. Additionally, we may from time to time face threats or claims from third parties claiming ownership

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of, or demanding release of, the alleged open source software or derivative works we developed using such software, which could include our proprietary source code, or otherwise seeking to enforce the terms of the applicable open source license. These threats or claims could result in litigation and could require us to make our source code freely available, purchase a costly license or cease offering the implicated applications unless and until we can re-engineer them to avoid infringement. Such a re-engineering process could require significant additional research and development resources, and we may not be able to complete it successfully. In addition to risks related to license requirements, our use of certain open source software may lead to greater risks than use of third party commercial software, as open source licensors generally do not provide warranties or controls on the origin of the software. Additionally, because any software source code we contribute to open source projects is publicly available, our ability to protect our intellectual property rights with respect to such software source code may be limited or lost entirely, and we are unable to prevent our competitors or others from using such contributed software source code. Any of these risks could be difficult to eliminate or manage and, if not addressed, could adversely affect our business, financial condition and results of operations.

Our business depends substantially on the continuing efforts of our management team, key employees and skilled personnel, and our business operations may be severely disrupted if we lose their services.

Our future success depends substantially on the continued efforts of our management team and key employees—in particular, Mr. Sheng Fu, our chief executive officer and Mr. Ming Xu, our chief technology officer. The loss of Mr. Fu, Mr. Xu or any of our management team members could harm our business. In addition, if our key employees were unable or unwilling to continue their services with us, we might not be able to replace them easily, in a timely manner, or at all, which could result in significant disruptions to our business. The integration of any replacement personnel could be time-consuming, expensive and cause additional disruption to our business. If any of our core management team members or key employees joins a competitor or forms a competing company, we may lose customers, know-how and staff.

Each of our executive officers and key employees has agreed to non-competition obligations. However, these agreements may not be enforceable in China, where our executives and key employees reside, in light of uncertainties relating to China’s legal system. See “—Risks Relating to Doing Business in China—Uncertainties in the interpretation and enforcement of Chinese laws and regulations could limit the legal protections available to you and us.” In addition, if one or more of our executives or other key personnel do not act in the best interests of our company when a conflict of interest arises, our business, prospects and reputation may be harmed.

Allegations or lawsuits against us or our management may harm our reputation and have a material and adverse impact on our business, results of operations and cash flows.

We have been, and may become, subject to allegations or lawsuits brought by our competitors, customers or other individuals or entities, including claims of breach of contract or unfair competition. Any such allegation or lawsuits, with or without merit, or any perceived unfair, unethical, fraudulent or inappropriate business practice by us or perceived malfeasance by our management could harm our reputation and user base and distract our management from our daily operations. We cannot assure you that neither we nor our management will be subject to allegations or lawsuits in the future. Allegations or lawsuits against us may also generate negative publicity that significantly harms our reputation, which may materially and adversely affect our user base and our ability to attract advertisers. In addition to the related cost, managing and defending litigation and related indemnity obligations can significantly divert management’s attention. We may also need to pay damages or settle the litigation with a substantial amount of cash. All of these could have a material adverse impact on our business, results of operation and cash flows.

Our chief executive officer, Mr. Sheng Fu, is named in a lawsuit filed by Qihoo 360 Technology Co. Ltd. in Hong Kong; there is uncertainty as to the outcome of this lawsuit and its impact on us.

In September 2011, Mr. Sheng Fu, our chief executive officer, was named as a defendant in a lawsuit filed by Qihoo 360 Technology Co. Ltd., or Qihoo, in the High Court of the Hong Kong Special Administrative Region. The complaint was subsequently amended in May 2012, July 2012 and January 2014. The amended complaint alleges

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that Mr. Fu has breached his contractual obligations of confidentiality, non-competition, non-solicitation and non-disparagement under the agreements Mr. Fu had entered into with a subsidiary of Qihoo prior to his resignation from the subsidiary in August 2008. The complaint asserts that Mr. Fu was a product manager of Qihoo and was responsible for, and participated in, product design and research of certain anti-virus products, including 360 Anti-virus and 360 Safe Guard, and had access to the related confidential information, trade secret, technology and know-how.

In connection with the above claims, the complaint specifically alleges that Mr. Fu: (i) used confidential information of Qihoo to develop, by himself or through Beijing Conew Technology Development Co. Ltd., or Beijing Conew, and Conew Network Technology (Beijing) Co., Ltd., or Conew Network, an anti-virus product released around May 2010 that was allegedly substantially similar to Qihoo’s 360 Anti-virus and 360 Safe Guard and infringed upon the confidential information, trade secrets and other rights of Qihoo; (ii) engaged in or dealt with businesses and products that directly competed with the businesses and/or products of Qihoo within the 18-month restricted period; (iii) employed employees of Qihoo within the 18-month restricted period, including Mr. Ming Xu, our chief technology officer, who was the then director of technology of 360 Safe Guard, a division of Qihoo; and (iv) publicly made certain negative statements about Qihoo.

Qihoo is seeking a court declaration that Qihoo’s repurchase of its shares previously granted to Mr. Fu under Qihoo’s share incentive plan at a nominal value was valid, a court order that Mr. Fu cease to use any confidential information or know-how of Qihoo, damages for disparagement, and a court order that Mr. Fu account to Qihoo for any profits that he earned as a result of the alleged breach.

Mr. Fu joined us in October 2010 when we acquired Conew.com Corporation for which Mr. Fu served as the chief executive officer prior to the acquisition. Our product offerings do not include, and are not derived from, the anti-virus products referenced in the complaint. Mr. Fu believes that Qihoo’s allegations are without merit and intends to contest them vigorously. However, it is inherently difficult to predict the length, process and outcome of any court proceedings. Any litigation, regardless of the merits, can be time consuming and can divert Mr. Fu’s attention away from our business. Should Qihoo prevail in the lawsuit against Mr. Fu, Mr. Fu’s reputation may be harmed and he may be ordered to cease using such confidential information. Moreover, although neither we nor Mr. Ming Xu have been named as a defendant in the lawsuit, we cannot guarantee that Qihoo will not initiate proceedings against us or Mr. Ming Xu, in the future, which could adversely affect our reputation, business and results of operations.

Future strategic investments or acquisitions may not be successful and may have a material and adverse effect on our business, reputation and results of operations.

We intend to continue to pursue strategic investments or acquisitions to expand our business. These transactions could subject us to a number of risks, including risks associated with sharing proprietary information, non-performance by third parties and increased expenses in integrating new businesses and personnel, any of which may materially and adversely affect our business, reputation and results of operations. We may fail to select appropriate acquisition targets, negotiate acceptable arrangements (including arrangements to finance acquisitions) or integrate the acquired businesses and their personnel into our own. Likewise, we may have limited ability to monitor or control the actions of our strategic partners and, to the extent any such strategic partner suffers negative publicity or harm to its reputation from events relating to its own business, we may also suffer negative publicity or harm to our reputation by association.

In addition, if appropriate opportunities arise, we may acquire additional assets, products, technologies or businesses that are complementary to our existing business. Future acquisitions and the subsequent integration of new assets and businesses into our own could require significant management attention and could result in a diversion of resources away from our existing business, which in turn could have an adverse effect on our business operations. Acquired assets or businesses may not generate the financial results we expect. Acquisitions could result in the use of substantial amounts of cash, increased leverage, potentially dilutive issuances of equity securities, goodwill impairment charges, amortization expenses for other intangible assets and exposure to potential unknown liabilities of the acquired business. Moreover, the costs of identifying and consummating

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acquisitions may be significant. In addition to possible shareholders’ approval, we may also have to obtain approvals and licenses from relevant government authorities for the acquisitions and comply with applicable laws and regulations, which could result in increased costs and delays.

If we fail to effectively manage our growth, our business and operating results could be harmed.

Our revenues and net income have grown significantly in recent years. Our revenues increased from RMB140.1 million in 2011 to RMB287.9 million in 2012, representing a 105.6% growth, and further to RMB749.9 million (US$123.9 million) in 2013, representing a 160.5% growth. Our net income was RMB62.0 million (US$10.2 million) in 2013, a 530.0% increase over our net income of RMB9.8 million in 2012, compared to a loss of RMB30.2 million in 2011.

In recent years, we have reoriented our business model, expanded our product offerings to include a wide array of mission critical applications and rapidly established our market position in China and globally. While we expect our user base for mobile applications to continue to grow, we do not expect our user base for PC based applications will show a similar trend. Accordingly, the growth and successful monetization of our mobile business and the continued monetization of our internet user base are critical for the continued growth of our business. In addition, our ability to grow our online game business will be limited by a non-competition agreement we will enter into with Kingsoft Corporation. For more information, see “Related Party Transactions—Transactions and Agreements with Kingsoft Corporation and its Subsidiaries—Non-compete undertaking.” To manage the further expansion of our business and the growth of our operations and personnel, we need to continuously improve our operational and financial systems, procedures and controls, and expand, train, manage and maintain good relations with our growing employee base. In addition, we must maintain and expand our relationships with a growing number of users and business partners. We operate in a dynamic and rapidly evolving market and investors should not rely on our past results as an indication of our future operating performance.

We rely on certain assumptions to calculate our active user figures, and real or perceived inaccuracies may harm our reputation and adversely affect our business.

We derive the number of daily active users and monthly active users of our applications using a combination of our internal statistics and data provide by a third-party research firm. Our internal statistics have not been independently verified. While we believe third-party data we use are reliable, we have not independently verified such data. Furthermore, there are inherent challenges in measuring usage across our large user base. For example, we calculate number of active users of our mobile applications based on the number of unique devices. We count each device on which one or more of our mobile applications have been installed as a single user. As such, a single individual using our applications on multiple devices is counted as multiple users, while multiple individuals sharing a device on which our applications are installed is counted as a single user. We do not include the number of daily active users and monthly active users of CM Security on the Android platform in our number of daily active users and monthly active users, respectively, of our products. CM Security on the Android platform identifies devices by Android ID, while our other mobile applications for the Android platform identify devices by Device ID. While each Device ID or Android ID identifies a unique device, under certain circumstances, such as a factory reset, the Android ID associated with a given device may change. We are unable to match Device IDs with Android IDs and therefore unable to adjust for double-counting of devices on which CM Security together with one or more of our other mobile applications are installed. Thus, the number of our daily active users and monthly active users may not accurately reflect the actual number of users of our applications.

In addition, the third-party data on which we rely for our daily active user and monthly active user statistics regarding our PC based applications is not yet available for March 2014. Accordingly, while we present daily active user and monthly active user figures for our mobile applications as of March 2014, we present daily active user and monthly active user figures for our PC based applications and total daily active user and monthly active user figures as of February 2014.

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Our measures of user base and user activity may differ from estimates published by third parties or from similarly titled metrics used by our competitors due to differences in methodology. If customers, business partners or investors do not perceive our user metrics to be accurate representations of our user base or user activity, or if we discover material inaccuracies in our user metrics, our reputation may be harmed and business partners may be less willing to allocate their spending or resources to us, which could negatively affect our business and operating results.

Our results of operations are subject to seasonal fluctuations due to a number of factors, any of which could adversely affect our business and operating results.

We are subject to seasonality and other fluctuations in our business. Revenues from online marketing services are typically higher in the fourth quarter due to peak shopping season and increased marketing campaigns during the period. We generally experience weaker demands for online marketing services in the first quarter of each year due to the Chinese New Year holidays. Thus, our operating results in one or more future quarters or years may fluctuate substantially or fall below the expectations of securities analysts and investors. In such event, the trading price of the ADSs may fluctuate significantly.

If we fail to build, maintain and enhance our brands, incur excessive expenses in this effort or if there is confusion in the market between our brands and that of Kingsoft Corporation, our business, results of operations and prospects may be materially and adversely affected.

We believe that building, maintaining and enhancing our brands are critical to the success of our business and our ability to compete. Well-recognized brands are important to increasing our number of users and expanding our online marketing business.

Many factors, some of which are beyond our control, are important to maintaining and enhancing our brands and may negatively impact our brands and reputation if not properly managed, such as:

In addition, we recently changed our corporate name and company logo as part of our corporate re-branding efforts. The change of our corporate name and logo is to better align our corporate name with the products we offer, and we will continue our efforts to strengthen our key brand assets, including Clean Master, Battery Doctor and Duba Antivirus. However, there is no assurance that we will be able to achieve the same or similar name recognition or status under our new corporate brand as that we have enjoyed. If our customers and business partners do not accept our new brand, our sales, performance and business relationships could be adversely affected.

As we expand, we may conduct various marketing and brand promotion activities. We cannot assure you, however, that these activities will be successful or that we will be able to achieve the outcomes we expect. In addition, any negative publicity in relation to our mission critical applications, regardless of its veracity, could harm our brands and reputation.

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Non-compliance on the part of third parties with whom we conduct business could disrupt our business and adversely affect our results of operations.

Our business partners, including our game developers, may be subject to regulatory penalties or punishments because of their regulatory compliance failures, which may disrupt our business. Any legal liabilities of, or regulatory actions against, our business partners may affect our business activities and reputation and, in turn, our results of operations. For example, we cooperate with online game developers to publish their games through our mission critical applications. The online game industry is highly regulated in China and many other jurisdictions, and online game operators are generally required to obtain licenses and permits, to complete filing procedures for specific mobile games and to comply with various requirements when conducting business. We require our partners in the online game industry to provide their licenses, permits or filing documents relating to the relevant online games before entering into cooperation arrangements with them, but we cannot assure you that such commercial partners or other developers will continue to maintain all applicable permits and approvals, and any noncompliance on their part may cause potential liabilities to us and disrupt our operations.

If we fail to obtain and maintain the requisite licenses and approvals required under the complex regulatory environment applicable to our businesses in China, or if we are required to take actions that are time-consuming or costly, our business, financial condition and results of operations may be materially and adversely affected.

The internet and mobile industries in China are highly regulated, as is the online game industry. Our VIEs are required to obtain and maintain applicable licenses and approvals from different regulatory authorities in order to provide their current services. Under the current PRC regulatory scheme, a number of regulatory agencies, including but not limited to the State Administration of Press, Publication, Radio, Film and Television, or SARFT, the Ministry of Culture, or MOC, Ministry of Industry and Information Technology, or MIIT, and the State Council Information Office, or SCIO, jointly regulate all major aspects of the internet industry, including the mobile internet and online games businesses. Operators must obtain various government approvals and licenses for relevant internet or mobile business.

We have obtained Internet Content Provider Licenses, or ICP licenses, for provision of internet information services, Online Culture Operating Licenses for operation of online games and Computer Information System Security Products Sales Licenses for our internet and mobile security applications. These licenses are essential to the operation of our business and are generally subject to regular government review or renewal. However, we cannot assure you that we can successfully renew these licenses in a timely manner or that these licenses are sufficient to conduct all of our present or future business.

We are also required to obtain an Online Culture Operating License from the MOC and an Internet Publishing License from SARFT in order to operate and distribute games through the internet and mobile networks. Each online game is also required to be approved by SARFT prior to the commencement of its operations in China. For domestic online games, within 30 days after the commencement of operation, the operator must finish the registration process with the MOC. Furthermore, an online game operator is required to obtain approval from the MOC in order to distribute virtual currencies for online games such as prepaid value cards, prepaid money or game points. While we endeavor to comply with the registration requirements, some of the developers of the games we publish, who have contractual obligations to procure such approval from SARFT, have not obtained such approval, and certain of the games we published were not registered within 30 days of their commencement of operations. We cannot assure you that we, or our game developers, will be able to obtain all the required permits, approvals or licenses in a timely manner, or at all.

In addition, we recently entered into an agreement to purchase certain assets relating to an online lottery business. After the closing of this transaction, we intend to use the assets acquired to engage in certain online lottery business. Under the Tentative Administrative Measures on Internet Lottery Sale promulgated by the PRC Ministry of Finance, or MOF, on September 26, 2010, an approval from the MOF is required for conducting online lottery business. Moreover, on January 18, 2012, the Implementation Rules of the Lottery Administration Regulations, or the Lottery Implementation Rules, were jointly issued by the MOF, the PRC Ministry of Civil Affairs and the State General Administration of Sport. The Lottery Implementation Rules became effective as of March 1, 2012 and explicitly stipulate that the welfare lotteries and sports lotteries sold without the Ministry of

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Finance’s approval and the Lottery Issuing Authority’s and Lottery Sales Office’s commission may be categorized as illegal lotteries. Therefore, in addition to MOF’s approval, the Lottery Implementation Rules further request the online lottery sales agency to obtain proper authorization from the Lottery Issuing Authority and the Lottery Sales Office to conduct lottery business. In December 2012, the MOF issued the Lottery Distribution and Sale Administration Measures, which became effective on January 1, 2013. These new measures expressly allow Internet lottery sales after obtaining an approval from the MOF. However, there are no associated implementation rules. We currently do not have such an approval, and our online lottery business may be suspended by relevant governmental authorities. We plan to apply for this approval if we are required to do so under newly issued rules or regulations or by relevant government authorities. However, if we fail to obtain this approval if and when we are required to do so, we may be subject to regulatory penalties for lack of such approval, our reputation may be harmed and our business may be adversely affected.

Considerable uncertainties exist regarding the interpretation and implementation of existing and future laws and regulations governing our business activities. We cannot assure you that we will not be found in violation of any future laws and regulations or any of the laws and regulations currently in effect due to changes in the relevant authorities’ interpretation of these laws and regulations. If we fail to complete, obtain or maintain any of the required licenses or approvals or make the necessary filings, we may be subject to various penalties, such as confiscation of the net revenues that were generated through the unlicensed internet or mobile activities, the imposition of fines and the discontinuation or restriction of our operations. Any such penalties may disrupt our business operations and materially and adversely affect our business, financial condition and results of operations.

Failure to comply with data privacy and protection laws and regulations could damage our reputation, deter current and potential users from using our applications and subject us to fines and damages, which could have material adverse effects on our business and results of operations.

We are subject to the data privacy and protection laws and regulations adopted by PRC and foreign governmental agencies. Data privacy laws restrict our storage, use, processing, disclosure, transfer and protection of non-public personal information provided to us by our users. In December 2012 and July 2013, new laws and regulations were issued by the standing committee of the PRC National People’s Congress and MIIT to enhance the legal protection of information security and privacy on the internet. The laws and regulations also require internet operators to take measures to ensure confidentiality of user information.  In addition, we are also subject to regulation under U.S. state law regarding the publication and dissemination of our privacy policy with respect to user data. It is possible that we may become subject to additional U.S. state or federal legislation or other foreign government’s rules and regulations regarding the use of personal information or privacy-related matters, which may conflict with, or be more stringent than, the regulations to which we are currently subject. Complying with any additional or new regulatory requirements could force us to incur substantial costs or require us to change our business practices.

While we strive to protect our users’ privacy and comply with all applicable data protection laws and regulations, any failure or perceived failure to do so may result in proceedings or actions against us by government entities or others, and could damage our reputation, deter current and potential users from using our applications and subject us to fines and damages. User and regulatory attitudes towards privacy are evolving, and future regulatory or user concerns about the extent to which personal information is used by, accessible to or shared with advertisers or others may adversely affect our ability to share certain data with advertisers, which may limit certain methods of targeted advertising. Concerns regarding the collection, use or disclosure of personal information or other data privacy-related matters, even if unfounded, could damage our reputation and results of operations. Negative publicity in relation to our applications regardless of its veracity, could seriously harm our reputation, which in turn may deter current and potential users from using our applications, which could have material adverse effects on our business and results of operations.

The successful operation of our business depends upon the performance and reliability of the internet infrastructure in China and the safety of our network and infrastructure.

Our business depends on the performance and reliability of the internet infrastructure in China. Almost all access to the internet is maintained through state-owned telecommunication operators under the administrative

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control and regulatory supervision of the MIIT. A more sophisticated internet infrastructure may not be developed in China. We may not have access to alternative networks in the event of disruptions, failures or other problems with China’s internet infrastructure. In addition, the internet infrastructure in China may not support the demands associated with continued growth in internet usage. Although we believe we have sufficient controls in place to prevent intentional disruptions, we expect our network and infrastructure may experience attacks specifically designed to impede the performance of our products and services, misappropriate proprietary information or harm our reputation. Because the techniques used by hackers to access or sabotage networks change frequently and may not be recognized until launched against a target, we may be unable to anticipate them effectively. The theft, unauthorized use or publication of our trade secrets and other confidential business information as a result of such an event could adversely affect our competitive position, brand reputation and user base, and our users and customers may assert claims against us related to resulting losses arising from security breaches. Our business could be subject to significant disruption and our results of operations may be affected.

Security breaches or hacking incidents could have a material adverse effect on our reputation, business prospects and results of operations.

Any significant breach of the security of our computer systems could significantly harm our business, reputation and results of operations and expose us to lawsuits brought by our users and business partners and to sanctions by governmental authorities in the jurisdictions in which we operate and may result in significant damage to our internet security brand. We cannot assure you that our IT systems will be completely secure from future security breaches or hacking incidents. Anyone who is able to circumvent our security measures could misappropriate proprietary information, including the personal information of our users, obtain users’ names and passwords and enable hackers to access users’ other online and mobile accounts, if those users use identical user names and passwords. They could also misappropriate other information, including financial information, uploaded by our users in a secure environment. These circumventions may cause interruptions in our operations or damage our brand image and reputation. Our servers may be vulnerable to computer viruses, physical or electronic break-ins and similar disruptions, which could cause system interruptions, website slowdown or unavailability, delays in communication or transactions, or loss of data. We may be required to incur significant additional costs to protect against security breaches or to alleviate problems caused by such breaches. Any significant security breach or attack on our system could result in a material adverse impact on our reputation, business prospects and results of operations.

We may incur net losses and experience negative cash flow from operating activities in the future and may not be able to obtain additional capital in a timely manner or on acceptable terms, or at all.

We have incurred net losses in the past and we may incur net losses in the future as we grow our business. In the first quarter of 2014, we granted a total of 57,148,631 restricted shares to our executive officers and employees pursuant to our 2011 share award scheme, or the 2011 Plan, and our 2013 equity incentive plan, or 2013 Plan, and we expect to incur share-based compensation expenses in an aggregate estimated amount of US$52.2 million over four to five years. In April 2014, we granted an additional 8,165,000 restricted shares in aggregate to certain of our employees and consultants pursuant to our 2011 Plan and 2013 Plan. In addition, we experienced negative cash flow from operating activities of RMB7.2 million in 2011. Although we generated positive cash flow from operating activities in the amount of RMB45.8 million in 2012 and RMB198.2 million (US$32.7 million) in 2013, we may experience negative cash flows again in the future.

We may not be able to achieve or sustain profitability or positive cash flow from operating activities and, if we achieve positive operating cash flow, it may not be sufficient to satisfy our anticipated capital expenditures and other cash needs. Further, we may not be able to fund our operating expenses and expenditures and may be unable to fulfill our financial obligations as they become due, which may result in voluntary or involuntary dissolution or liquidation proceedings and a total loss of your investment.

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We have granted, and may continue to grant, options, restricted shares and other types of awards under our share incentive plans, which may result in increased share-based compensation expenses.

We adopted a share award scheme in May 2011, or the 2011 Plan, and a 2013 equity incentive plan in January 2014, or the 2013 Plan. Under the 2011 Plan, as amended in September 2013, we are authorized to grant restricted share awards for issuance of up to a maximum of 100,000,000 ordinary shares. Under the 2013 Plan, we are authorized to grant options or other types of awards for issuance of up to a maximum of 64,497,718 ordinary shares. In addition, in April 2014, we adopted a 2014 restricted shares plan, or the 2014 Plan, pursuant to which we are authorized to issue up to 122,545,665 Class A ordinary shares for the grant of restricted shares and restricted share units. See “Management—Share Incentive Plans” for a detailed discussion. In 2011, 2012 and 2013, we recorded RMB5.8 million, RMB20.3 million and RMB37.4 million, respectively, in share-based compensation expenses. The amount of these expenses is based on the fair value of the share-based compensation awards we granted, and the recognition of unrecognized share-based compensation cost will depend on the forfeiture rate of our unvested restricted shares. In the first quarter of 2014, we granted a total of 57,148,631 restricted shares to our executive officers and employees, and we expect to incur share-based compensation expenses in an aggregate estimated amount of US$52.2 million in connection with the first quarter grants over four to five years. In April 2014, we granted an additional 8,165,000 restricted shares in aggregate to certain of our employees and consultants pursuant to our 2011 Plan and 2013 Plan. Expenses associated with share-based compensation have affected our net income and may reduce our net income in the future, and any additional securities issued under share-based compensation schemes will dilute the ownership interests of our shareholders, including holders of the ADSs. We believe the granting of share-based compensation is of significant importance to our ability to attract and retain key personnel, employees and consultants, and we will continue to grant share-based compensation in the future. As a result, our expenses associated with share-based compensation may increase, which may have an adverse effect on our results of operations.

We are a “controlled company” within the meaning of the rules of NYSE Listed Company Manual as well as a foreign private issuer. As a result, we expect to qualify for, and intend to rely on, exemptions from certain corporate governance requirements. You will not have the same protections afforded to shareholders of companies that are subject to such requirements.

After the completion of this offering, Kingsoft Corporation will own 53.5% of the total voting rights in our company, assuming the underwriters do not exercise their option to purchase additional ADSs and we will issue and sell a total of 37,037,037 Class A ordinary shares through the Concurrent Private Placement, which number of shares has been calculated based on the mid-point of the estimated initial public offering price range shown on the front cover page of this prospectus. As a result, we will be a “controlled company” under Section 303A of the NYSE Listed Company Manual. As a controlled company, we intend to rely on certain exemptions that are available to controlled companies from the NYSE corporate governance requirements, including the requirements that:

We are not required to and will not voluntarily meet these requirements. As a result of our use of the “controlled company” exemption, our investors will not have the same protection as they would if we were not a controlled company.

In addition, because Kingsoft Corporation will own 53.5% of the total voting rights in our company, assuming the underwriters do not exercise their option to purchase additional ADSs, it will have decisive influence in determining the outcome of any corporate transaction or other matter submitted to the shareholders

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for approval, including mergers, consolidations and the sale of all or substantially all of our assets, election of directors and other significant corporate actions. Without the consent of Kingsoft Corporation, we may be prevented from entering into transactions that could be beneficial to us. The interests of Kingsoft Corporation and our other large shareholders may differ from the interests of our other shareholders.

Furthermore, because we qualify as a foreign private issuer under the Exchange Act, we will be exempt from certain provisions of the Exchange Act that are applicable to U.S. public companies, including (i) the sections of the Exchange Act regulating the solicitation of proxies, consents or authorizations in respect of a security registered under the Exchange Act, (ii) the sections of the Exchange Act requiring insiders to file public reports of their stock ownership and trading activities and liability for insiders who profit from trades made in a short period of time, and (iii) the rules under the Exchange Act requiring the filing with the SEC of quarterly reports on Form 10-Q containing unaudited financial and other specified information, or current reports on Form 8-K, upon the occurrence of specified significant events. As a result, you may not be provided with the same benefits as a shareholder of a U.S. issuer.

We may have conflicts of interest with Kingsoft Corporation and, because of Kingsoft Corporation’s controlling voting interest in our company, we may not be able to resolve such conflicts on favorable terms for us.

Conflicts of interest may arise between Kingsoft Corporation and us in a number of areas relating to our past and ongoing relationships. Potential conflicts of interest that we have identified include the following:

Cooperation framework agreement.  Historically, we have entered into various transactions from time to time with Kingsoft Corporation and its subsidiaries. For the years ended December 31, 2011 and 2012 and 2013, we recognized aggregate fees of RMB21.3 million, RMB16.3 million and RMB14.4 million (US$2.4 million), respectively, to Kingsoft Corporation and its subsidiaries for certain promotion services, licensing services, leasing and miscellaneous services they provided to us. For the same aforementioned periods, we recognized aggregate revenue of RMB5.3 million, RMB2.9 million and RMB4.4 million (US$727,000), respectively, from Kingsoft Corporation and its subsidiaries for certain licensing services and technology support services that we provided to Kingsoft Corporation and its subsidiaries. On December 27, 2013, we entered into a cooperation framework agreement with Kingsoft Corporation for the period from January 1, 2014 to December 31, 2016 with respect to such ongoing transactions. So long as Kingsoft Corporation continues to control us, we may not be able to bring a legal claim against them in the event of contractual breach, notwithstanding our contractual rights under the cooperation framework agreement described above and other inter-company agreements entered into from time to time.

Sale of shares in our company.  Kingsoft Corporation may decide to sell all or a portion of our shares that it holds to a third party, including to one of our competitors, thereby giving that third party substantial influence over our business and our affairs. Such a sale could be contrary to the interests of certain of our shareholders, including our employees or our public shareholders.

Our board members or executive officers may have conflicts of interest. Our company has certain common directors and officers with Kingsoft Corporation. Mr. Jun Lei, the chairman of our board of directors, also currently serves as the chairman and non-executive director of Kingsoft Corporation. Mr. Hongjiang Zhang, one of our board directors, is currently also the chief executive officer and director of Kingsoft Corporation. Mr. Yuk Keung Ng, one of our board directors, is currently also the chief financial officer and director of Kingsoft Corporation. Mr. Wei Liu, one of our board directors, is also a vice president of Kingsoft Corporation. Mr. Sheng Fu, our chief executive officer and director, also serves as a senior vice president at Kingsoft Corporation. A number of our directors and executive officers also own shares and/or options to purchase shares in Kingsoft Corporation. Kingsoft Corporation may continue to grant incentive share compensation to our board members and executive officers from time to time. These relationships could create perceived or actual conflicts of interest when these persons are faced with decisions with potentially different implications for Kingsoft Corporation and us.

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Allocation of business opportunities.  Business opportunities may arise that both we and Kingsoft Corporation find attractive, and which would complement or expand our respective businesses. Subject to the non-compete agreement to be entered into between Kingsoft Corporation and us on the date of completion of this offering, Kingsoft Corporation may decide to take the opportunities itself, which would prevent us from taking advantage of the opportunity ourselves.

Developing business relationships with Kingsoft Corporation’s competitors.  So long as Kingsoft Corporation remains as our controlling shareholder, we may be limited in our ability to do business with its competitors, such as other Internet based software developers, distributors and service providers in China. This may limit the effectiveness of our online advertisement and not be in the best interests of our company and our other shareholders.

Although our company is a standalone entity, we expect to operate, for as long as Kingsoft Corporation is our controlling shareholder, as part of Kingsoft Group. Kingsoft Corporation may from time to time make strategic decisions that it believes are in the best interests of the Kingsoft Group as a whole. These decisions may be different from the decisions that we would have made on our own. Kingsoft Corporation’s decisions with respect to us or our business may be resolved in ways that favor Kingsoft Corporation and therefore Kingsoft Corporation’s own shareholders, which may not coincide with the interests of our other shareholders. We may not be able to resolve any potential conflicts, and even if we do so, the resolution may be less favorable to us than if we were dealing with an unaffiliated shareholder. Even if both parties seek to transact business on terms intended to approximate those that could have been achieved among unaffiliated parties, this may not succeed in practice.

We may be the subject of anti-competitive, harassing or other detrimental conduct that could harm our reputation and cause us to lose users and customers and adversely affect the price of the ADSs.

In the future we may be the target of anti-competitive, harassing, or other detrimental conduct by third parties. Allegations, directly or indirectly against us or any of our executive officers, may be posted in internet chat-rooms or on blogs or websites by anyone, whether or not related to us, on an anonymous basis. The availability of information on social media platforms and devices is virtually immediate, as is its impact. Social media platforms and devices immediately publish the content their subscribers and participants post, often without filters or checks on the accuracy of the content posted. Information posted may be inaccurate and adverse to us, and it may harm our business, prospectus or financial performance. The harm may be immediate without affording us an opportunity for redress or correction. In addition, such conduct may include complaints, anonymous or otherwise, to regulatory agencies. We may be subject to regulatory or internal investigation as a result of such third-party conduct and may be required to expend significant time and incur substantial costs to address such third-party conduct, and there is no assurance that we will be able to conclusively refute each of the allegations within a reasonable period of time, or at all. Additionally, our reputation could be harmed as a result of the public dissemination of anonymous allegations or malicious statements about our business, which in turn may cause us to lose users and customers and adversely affect the price of the ADSs.

If we fail to implement and maintain an effective system of internal control, we may be unable to accurately report our results of operations, meet our reporting obligations or prevent fraud.

Prior to this offering, we were a private company with limited accounting personnel and other resources with which to address our internal controls and procedures. Our independent registered public accounting firm has not conducted an audit of our internal control over financial reporting. In connection with the preparation and external audit of our consolidated financial statements as of and for the years ended December 31, 2011, 2012 and 2013, we and Ernst & Young Hua Ming LLP, an independent registered public accounting firm, noted a material weakness in our internal control over financial reporting. The material weakness identified was our lack of financial reporting personnel with the requisite U.S. GAAP and SEC financial reporting expertise. We have implemented and are continuing to implement a number of measures to address the material weakness. For example, we have recently appointed a chief financial officer, hired a number of financial reporting and internal control personnel with U.S. GAAP and SEC financial reporting expertise, and have established an internal audit

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function. We also plan to hire additional personnel with U.S. GAAP and SEC financial reporting expertise. We have not incurred any material costs to date but we are not able to estimate with reasonable certainty the costs that we will need to incur to remediate the material weakness and improve our internal control over financial reporting in the future. For details about this material weakness, and the steps we have taken and plan to take to remediate this material weakness, see “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Internal Control Over Financial Reporting.” We intend to remediate this material weakness in our internal control over financial reporting by the end of the first full year after the completion of this offering. However, we cannot assure you that we will be able to continue implementing these measures in the future, or that we will not identify additional material weaknesses or significant deficiencies in the future.

Neither we nor our independent registered public accounting firm undertook a comprehensive assessment of our internal control for the purposes of identifying and reporting material weaknesses, significant deficiencies and control deficiencies in our internal control over financial reporting. It is possible that, had we performed a formal assessment of our internal control over financial reporting or had our independent registered public accounting firm performed an audit of our internal control over financial reporting, additional material weaknesses or significant deficiencies may have been identified.

Upon the completion of this offering, we will become a public company in the United States and will be subject to Section 404 and the applicable rules and regulations thereunder. Section 404 requires that we include a report of management on our internal control over financial reporting in our annual report on Form 20-F beginning with our annual report for the fiscal year ending December 31, 2015. In addition, once we cease to be an “emerging growth company” as such term is defined in the JOBS Act, our independent registered public accounting firm must attest to and report on the effectiveness of our internal control over financial reporting. Our failure to achieve and maintain effective internal control over financial reporting could result in the loss of investor confidence in the reliability of our financial statements, which in turn could harm our business and negatively impact the market price of the ADSs.

We have limited business insurance coverage. Any interruption of our business may result in substantial costs to us and the diversion of our resources, which could have an adverse effect on our financial condition and results of operations.

Insurance products available in China currently are not as extensive as those offered in more developed economies. Consistent with customary industry practice in China, our business insurance is limited and we do not carry real property or business interruption insurance to cover our operations. We have determined that the costs of insuring for related risks and the difficulties associated with acquiring such insurance on commercially reasonable terms make it impractical for us to have such insurance. Any uninsured damage to our systems or disruption of our business operations could require us to incur substantial costs and divert our resources, which could have an adverse effect on our financial condition and results of operations.

Our business, financial condition and results of operations, as well as our ability to obtain financing, may be adversely affected by a downturn in the global or Chinese economy.

The global financial markets have experienced significant disruptions since 2008 and the United States, Europe and other economies have experienced recession. The recovery from the lows of 2008 and 2009 has been uneven and is facing new challenges, including the escalation of the European sovereign debt crisis since 2011 and the slowdown of the Chinese economy in 2012. It is unclear whether the Chinese economy will resume its high growth rate. There is considerable uncertainty over the long-term effects of the expansionary monetary and fiscal policies adopted by the central banks and financial authorities of some of the world’s leading economies, including China’s. There have also been concerns over unrest in the Middle East and Africa, which have resulted in volatility in oil and other markets. There have also been concerns about the economic effect of the tensions in Japan’s relationship with China. The internet industry may be affected by economic downturns. A prolonged slowdown in the global or Chinese economy, may lead to a reduced amount of internet advertising, which could materially and adversely affect our business, financial condition and results of operations.

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Moreover, a slowdown or disruption in the global or Chinese economy may have a material and adverse impact on the financing available to us. The weakness in the economy could erode investor confidence, which constitutes the basis of the credit market. The recent financial turmoil affecting the financial markets and banking system may significantly restrict our ability to obtain financing in the capital markets or from financial institutions on commercially reasonable terms, or at all. Although we are uncertain about the extent to which the recent global financial and economic crisis and slowdown of Chinese economy may impact our business in the short-term and long-term, there is a risk that our business, results of operations and prospects would be materially and adversely affected by any global economic downturn or disruption or slowdown of Chinese economy.

Any catastrophe, including natural catastrophes, outbreaks of health pandemics or other extraordinary events, could disrupt our business operations.

Our operations may be vulnerable to interruption and damage from natural or other catastrophes, including earthquakes, fire, floods, hail, windstorms, severe winter weather (including snow, freezing water, ice storms and blizzards), environmental accidents, power loss, communications failures, explosions, man-made events such as terrorist attacks and similar events. We cannot predict the incidence, timing and severity of such events. If any catastrophe or extraordinary event occurs in the future, our ability to operate our business could be seriously impaired. Such events could make it difficult or impossible for us to deliver our services and products to our users and could decrease demand for our products. Because we do not carry property insurance and significant time could be required to resume our operations, our financial position and results of operations could be materially and adversely affected in the event of any major catastrophic event.

In addition, our business could be adversely affected by the outbreak of health pandemics, including influenza A, such as H7N9, severe acute respiratory syndrome (SARS) or other pandemics. Any occurrence of these pandemic diseases or other adverse public health developments in China or elsewhere could severely disrupt our staffing or the staffing of our business partners and otherwise reduce the activity levels of our work force and the work force of our business partners, causing a material and adverse effect on our business operations.

Risks Relating to Our Corporate Structure

If the PRC government finds that the structure we have adopted for our business operations does not comply with PRC governmental restrictions on foreign investment in internet and mobile businesses, or if these laws or regulations or interpretations of existing laws or regulations change in the future, we could be subject to severe penalties, including the shutting down of our platform and our business operations.

Foreign ownership of internet-based and mobile-based businesses is subject to significant restrictions under current PRC laws and regulations. The PRC government regulates internet access, distribution of online information, online advertising, distribution and operation of online games through strict business licensing requirements and other government regulations. These laws and regulations also limit foreign ownership of PRC companies that provide internet information services. Specifically, foreign ownership of an internet information provider may not exceed 50%. In addition, according to the Several Opinions on the Introduction of Foreign Investment in the Cultural Industry promulgated by the MOC, the SARFT, the National Development and Reform Commission and the Ministry of Commerce, or the MOFCOM, in July 2005, foreign investors are prohibited from investing in or operating, among other things, any internet cultural operating entities. Companies providing mobile internet services such as ours are governed by these rules and regulations on internet companies in China.

We are a Cayman Islands company and we conduct our operations in China primarily through our VIEs, including Beijing Antutu, Beike Internet, Guangzhou Network, Beijing Network, and Beijing Conew. We exercise effective control over our VIEs through a series of contractual arrangements that those entities and/or their shareholders signed with two of our wholly-owned PRC subsidiaries, namely, Beijing Security and Conew Network. Our contractual arrangements with our VIEs and their shareholders enable us to exercise effective control over our VIEs and give us the obligation to absorb losses and the right to receive benefits of the VIEs,

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requiring us to treat them as our consolidated affiliated entities and to consolidate their operating results. For a detailed description of these contractual arrangements, see “Corporate History and Structure.”

On September 28, 2009, the General Administration of Press and Publication, or the GAPP, which later integrated with the State Administration for Radio, Film and Television to become SARFT effective from March 22, 2013, the National Copyright Administration and the Office of National Work Group for Combating Pornography and Illegal Publications jointly issued a Notice on Implementing the Provisions of the State Council on “Three Determinations” and the Relevant Explanations of the State Commission Office for Public Sector Reform and Further Strengthening the Administration of the Pre-approval of Online Games and Examination and Approval of Imported Online Games, or Circular 13. Circular 13 restates that foreign investors are not permitted to invest in online game-operating businesses in China via wholly-owned, equity joint venture or cooperative joint venture investments and expressly prohibits foreign investors from gaining control over or participating in domestic mobile game operators through indirect ways such as establishing other joint venture companies or entering into contractual or technical arrangements such as the variable interest entity structural arrangements we adopted. As no detailed interpretation of Circular 13 has been issued to date, it is not clear how Circular 13 will be implemented. We are not aware of any companies that have adopted a corporate structure that is the same as or similar to ours having been penalized or having had their arrangements terminated under Circular 13 since the effective date of the circular. Furthermore, as some other primary government regulators, such as the MOFCOM, the MOC, and the MIIT, did not join in issuing Circular 13, the scope of the implementation and enforcement of Circular 13 remains uncertain. In the event that we, our PRC subsidiaries or our VIEs are found to be in violation of the prohibition under Circular 13, the SARFT, in conjunction with the relevant regulatory authorities in charge, may impose applicable penalties, which may include suspension or revocation of relevant licenses and registrations.

Based on the advice of our PRC legal counsel, Han Kun Law Offices, the contractual arrangements among our PRC subsidiaries, our VIEs, their shareholders and us, as described in this prospectus, are valid, legal and binding on each of the above-mentioned parties thereto in accordance with the terms of respective contractual arrangements. However, we were further advised by Han Kun Law Offices that there are substantial uncertainties regarding the interpretation and application of current or future PRC laws and regulations, and that these laws or regulations or interpretations of these laws or regulations may change in the future. Furthermore, the relevant government authorities have broad discretion in interpreting these laws and regulations. Accordingly, we cannot assure you that PRC government authorities will not ultimately take a view contrary to that of our PRC legal counsel.

If our corporate structure, contractual arrangements and businesses of our company, our PRC subsidiaries or our VIEs are found to be in violation of any existing or future PRC laws or regulations, the relevant governmental authorities would have broad discretion in dealing with such violation, including

Any of these actions could cause significant disruption to our business operations and severely damage our reputation, which would in turn materially and adversely affect our business, financial condition and results of operations. Our VIEs contributed most of our consolidated net revenues in the years ended December 31, 2012 and 2013. If the imposition of any of the above penalties were to cause us to lose the rights to direct the activities

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of our VIEs or our right to receive their economic benefits, we would no longer be able to consolidate such entities.

We rely on contractual arrangements with our VIEs and their shareholders for the operation of our business, which may not be as effective as direct ownership.

Because of PRC restrictions on foreign ownership of internet businesses in China, we depend on contractual arrangements with our VIEs, in which we have no ownership interest, to conduct our business. These contractual arrangements are intended to provide us with effective control over these entities and allow us to obtain economic benefits from them. Our VIEs are owned directly by Messrs. Sheng Fu, Ming Xu and Wei Liu, who are also our core management and/or director, as well as Ms. Weiqin Qiu, an affiliate of our company. For additional details on these ownership interests, see “Corporate History and Structure.” However, these contractual arrangements may not be as effective in providing control as direct ownership. For example, our VIEs and their shareholders could breach their contractual arrangements with us by, among other things, failing to operate our business in an acceptable manner or taking other actions that are detrimental to our interests. If we were the controlling shareholder of these VIEs with direct ownership, we would be able to exercise our rights as shareholders to effect changes to their board of directors, which in turn could implement changes at the management and operational level. However, under the current contractual arrangements, as a legal matter, if our VIEs or their shareholders fail to perform their obligations under these contractual arrangements, we may have to incur substantial costs to enforce such arrangements, and rely on legal remedies under PRC law, including contract remedies, which may be time-consuming, unpredictable and expensive. If we are unable to enforce these contractual arrangements, or if we suffer significant delay or other obstacles in the process of enforcing them, our business and operations could be severely disrupted, which could materially and adversely affect our results of operations and damage our reputation. See “—Risks Relating to Doing Business in China—Uncertainties in the interpretation and enforcement of Chinese laws and regulations could limit the legal protections available to you and us.”

Our contractual arrangements with our VIEs may result in adverse tax consequences to us.

As a result of our corporate structure and the contractual arrangements among our PRC subsidiaries, our VIEs, their shareholders and us, we are effectively subject to PRC value-added tax and related surcharges on revenues generated by our subsidiaries from our contractual arrangements with our VIEs. The PRC Enterprise Income Tax Law requires every enterprise in China to submit its annual enterprise income tax return together with a report on transactions with its affiliates or related parties to the relevant tax authorities. These transactions may be subject to audit or challenge by the PRC tax authorities within ten years after the taxable year during which the transactions are conducted. We may be subject to adverse tax consequences if the PRC tax authorities were to determine that the contracts between us and our VIEs were not on an arm’s length basis and therefore constituted improper transfer pricing arrangements. If this occurs, the PRC tax authorities could request that our VIEs and any of their respective subsidiaries adjust their taxable income upward for PRC tax purposes. Such a pricing adjustment could adversely affect us by reducing expense deductions recorded by such VIEs and thereby increasing these entities’ tax liabilities, which could subject these entities to late payment fees and other penalties for the underpayment of taxes. Our consolidated net income may be materially and adversely affected if our VIEs’ tax liabilities increase or if they become subject to late payment fees or other penalties.

The shareholders of our VIEs may have potential conflicts of interest with us, which may materially and adversely affect our business.

The shareholders of our VIEs include Messrs. Sheng Fu, Ming Xu and Wei Liu, who are also our core management and/or director, as well as Ms. Weiqin Qiu, an affiliate of our company. Conflicts of interest may arise between the roles of Messrs. Sheng Fu, Ming Xu and Wei Liu as shareholders, directors or officers of our company and as shareholders of our VIEs. We rely on these individuals to abide by the laws of the Cayman Islands, which provide that directors and officers owe a fiduciary duty to our company to act in good faith and in the best interest of our company and not to use their positions for personal gain. The shareholders of our VIEs

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have executed shareholder voting proxy agreements to appoint our applicable PRC subsidiary or a person designated by such PRC subsidiary to vote on their behalf and exercise voting rights as shareholders of the VIEs. We cannot assure you that when conflicts arise, shareholders of our VIEs will act in the best interest of our company or that conflicts will be resolved in our favor. If we cannot resolve any conflicts of interest or disputes between us and these shareholders, we would have to rely on legal proceedings, which may be expensive, time-consuming and disruptive to our operations. There is also substantial uncertainty as to the outcome of any such legal proceedings.

We may rely on dividends paid by our PRC subsidiaries to fund any cash and financing requirements we may have. Any limitation on the ability of our PRC subsidiaries to pay dividends to us could have a material adverse effect on our ability to conduct our business and to pay dividends to holders of the ADSs and our ordinary shares.

We are a holding company, and we may rely on dividends to be paid by our wholly-owned PRC subsidiaries for our cash and financing requirements, including the funds necessary to pay dividends and other cash distributions to the holders of the ADSs and our ordinary shares and service any debt we may incur. If our wholly owned PRC subsidiaries incur debt on their own behalf in the future, the instruments governing the debt may restrict their ability to pay dividends or make other distributions to us.

Under PRC laws and regulations, wholly foreign-owned enterprises in the PRC, such as Conew Network and Zhuhai Juntian, may pay dividends only out of its accumulated profits as determined in accordance with PRC accounting standards and regulations. In addition, a wholly foreign-owned enterprise is required to set aside at least 10% of its after-tax profits each year, after making up previous years’ accumulated losses, if any, to fund certain statutory reserve funds, until the aggregate amount of such a fund reaches 50% of its registered capital. At the discretion of the board of director of the wholly foreign-owned enterprise, it may allocate a portion of its after-tax profits based on PRC accounting standards to staff welfare and bonus funds. These reserve funds and staff welfare and bonus funds are not distributable as cash dividends. Any limitation on the ability of our wholly-owned PRC subsidiaries to pay dividends or make other distributions to us could materially and adversely limit our ability to grow, make investments or acquisitions that could be beneficial to our business, pay dividends, or otherwise fund and conduct our business.

Our existing shareholders have substantial influence over our company and their interests may not be aligned with the interests of our other shareholders, which may discourage, delay or prevent a change in control of our company and could deprive our shareholders of an opportunity to receive a premium for their securities.

Currently, our parent company Kingsoft Corporation, and FaX Vision Corporation, which is a company jointly owned by our founders, Mr. Sheng Fu and Mr. Ming Xu, together beneficially own an aggregate of 67.6% of our outstanding shares. Upon the completion of this offering and the Concurrent Private Placement, they will beneficially own an aggregate of 827,806,049 of our Class B ordinary shares and 7,407,407 of our Class A ordinary shares, or 60.4% of our then outstanding shares, and 66.8% of the then total voting power, assuming the underwriters do not exercise their over-allotment option to purchase additional ADSs. This concentration of ownership may discourage, delay or prevent a change in control of our company, which could deprive our shareholders of an opportunity to receive a premium for their shares as part of any contemplated sale of our company and may reduce the price of the ADSs.

In addition, if any of our core management team members violates the terms of their non-competition or other employment agreements with us, or their legal duties by diverting business opportunities from us, it will result in our loss of corporate opportunities. These actions may take place even if they are opposed by our other shareholders, including those who purchase ADSs in this offering. Although, after the completion of this offering, we will adopt a code of business conduct and ethics to help restrict conflicts of interest involving directors and officers, any violation of this code by our existing officers or directors may materially and adversely affect our business operations. For more information regarding the beneficial ownership of our company by our principal shareholders, see “Principal Shareholders.”

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We may lose the ability to use and enjoy vital assets held by our VIEs if such entities go bankrupt or become subject to a dissolution or liquidation proceeding.

Some of our VIEs hold certain assets, such as patent applications and software copyrights for the proprietary technology that are essential to the operations of our platform and important to the operation of our business. If any of these VIEs goes bankrupt and all or part of its assets become subject to liens or rights of third party creditors, we may be unable to continue some or all of our business activities, which could materially and adversely affect our business, financial condition and results of operations. If any of such VIEs undergoes a voluntary or involuntary liquidation proceeding, the unrelated third party creditors may claim rights to some or all of these assets, thereby hindering our ability to operate our business, which could materially and adversely affect our business, financial condition and results of operations.

Risks Relating to Doing Business in China

Uncertainties in the interpretation and enforcement of Chinese laws and regulations could limit the legal protections available to you and us.

The PRC legal system is based on written statutes and prior court decisions have limited value as precedents. Since these laws and regulations are relatively new and the PRC legal system continues to rapidly evolve, the interpretations of many laws, regulations and rules are not always uniform and enforcement of these laws, regulations and rules involves uncertainties.

From time to time, we may have to resort to administrative and court proceedings to enforce our legal rights. However, since PRC administrative and court authorities have significant discretion in interpreting and implementing statutory and contractual terms, it may be more difficult to predict the outcome of administrative and court proceedings and the level of legal protection we enjoy than in more developed legal systems. Furthermore, the PRC legal system is based in part on government policies and internal rules (some of which are not published in a timely manner or at all) that may have retroactive effect. As a result, we may not be aware of any violation of these policies and rules until after such violation. Such unpredictability, including uncertainty as to the scope and effect of our contractual, property (including intellectual property) and procedural rights, could materially and adversely affect our business and impede our ability to continue our operations.

Changes in China’s economic, political or social conditions or government policies could have a material adverse effect on our business and operations.

Substantially all of our assets are located in China and a significant number of our users, advertisers, suppliers and business partners are from China. Accordingly, our business, financial condition, results of operations and prospects may be influenced to a significant degree by political, economic and social conditions in China generally, and by continued economic growth in China as a whole.

The Chinese economy differs from the economies of most developed countries in many respects, including the level of government involvement, level of development, growth rate, control of foreign exchange and allocation of resources. Although the Chinese government has implemented measures since the late 1970s emphasizing the utilization of market forces for economic reform, the reduction of state ownership of productive assets, and the establishment of improved corporate governance in business enterprises, a substantial portion of productive assets in China is still owned by the Chinese government. In addition, the Chinese government continues to play a significant role in regulating industrial development through industrial policies. The Chinese government also exercises significant control over the Chinese economic growth through allocating resources, controlling payment of foreign currency-denominated obligations, setting monetary policy, and providing preferential treatment to particular industries or companies.

While the Chinese economy has experienced significant growth in recent decades, growth has been uneven, both geographically and among various sectors of the economy. The Chinese government has implemented

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various measures to encourage economic growth and guide the allocation of resources. Some of these measures benefit the overall Chinese economy, but may also have a negative effect on us. The Chinese government has implemented certain measures, including interest rate increases, to control the pace of economic growth. These measures may cause decreased economic activity in China and, since 2012, Chinese economic growth has slowed. Any prolonged slowdown in the Chinese economy may reduce the demand for our applications and adversely affect our business, financial condition and results of operations.

We may be adversely affected by the complexity of, and uncertainties and changes in, PRC regulation on internet and mobile internet businesses and companies.

The PRC government extensively regulates the internet industry, including foreign ownership of, and the licensing and permit requirements pertaining to, companies in the internet industry, including mobile internet companies. These internet-related laws and regulations are relatively new and evolving, and their interpretation and enforcement involve significant uncertainty. As a result, in certain circumstances it may be difficult to determine what actions or omissions may be deemed to be in violations of applicable laws and regulations. Issues, risks and uncertainties relating to PRC regulation of the internet business include, but are not limited to, the following:

In July 13, 2006, the MIIT issued the Circular of the Ministry of Information Industry on Strengthening the Administration of Foreign Investment in Value-added Telecommunications Services. This circular prohibits domestic telecommunication service providers from leasing, transferring or selling telecommunication business operating licenses to any foreign investor in any form, or providing any resources, sites or facilities to any foreign investor for their illegal operation of a telecommunication business in China. According to this circular, either the holder of a value-added telecommunication business operating license or its shareholders must directly own the domain names and trademarks used by such license holders in their provision of value-added

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telecommunication services. The circular also requires each license holder to have the necessary facilities, including servers, for its approved business operations and to maintain such facilities in the regions covered by its license.

The interpretation and application of existing PRC laws, regulations and policies and possible new laws, regulations or policies relating to the internet industry have created substantial uncertainties regarding the legality of existing and future foreign investments in, and the businesses and activities of, internet and mobile internet businesses in China, including our business. There are also risks that we may be found to have violated existing or future laws and regulations given the uncertainty and complexity of China’s regulation of internet business.

If any of our online games business activities is deemed to be in violation of law, we may have to cease or modify our online game operations, which could have a material and adverse effect on our business and results of operations.

All online games currently offered on our platform are licensed by and operated with game developers. Except for an Internet Publishing License, we have obtained licenses which we believe are sufficient for our online game offerings. However, the MOC or other competent government authorities may reinterpret existing laws, regulations or policies or promulgate and implement new ones, which may require us to cease or modify our online games business. Any such modification to our online games business may result in disruption of our business, diversion of management attention and the incurrence of substantial costs. In addition, we have requested our online game business partners to obtain and maintain all necessary licenses. However, we cannot assure you that all of our business partners have obtained or updated all necessary licenses, permits or registrations, from or with relevant governmental authorities. If any of such business partners fails to do so, we may not be able to continue to operate the affected online games, which may adversely affect our business and results of operations.

Content posted or displayed on our mobile and PC platforms and applications such as duba.com and 9724.com, including advertisements, may be found objectionable by PRC regulatory authorities and may subject us to penalties and other severe consequences.

The PRC government has adopted regulations governing internet and wireless access and the distribution of information over the internet and wireless telecommunication networks. Under these regulations, internet content providers and internet publishers are prohibited from posting or displaying over the internet or wireless networks content that, among other things, violates PRC laws and regulations, impairs the national dignity of China or the public interest, or is obscene, superstitious, fraudulent or defamatory. Furthermore, internet content providers are also prohibited from displaying content that may be deemed by relevant government authorities as “socially destabilizing” or leaking “state secrets” of the PRC. Failure to comply with these requirements may result in the revocation of licenses to provide internet content or other licenses, the closure of the concerned platforms and reputational harm. The operator may also be held liable for any censored information displayed on or linked to their platform. For a detailed discussion, see “PRC Regulation.”

Since our inception, we have worked to monitor the content on our platforms and applications and to make the utmost effort to comply with relevant laws and regulations. However, it may not be possible to determine in all cases the types of content that could result in our liability as a distributor of such content and, if any of the content posted or displayed on our mobile and PC platforms and applications is deemed by the PRC government to violate any content restrictions, we would not be able to continue to display such content and could become subject to penalties, including confiscation of income, fines, suspension of business and revocation of required licenses, which could materially and adversely affect our business, financial condition and results of operations.

We may also be subject to potential liability for any unlawful actions by our users or third party service providers on our platform. It may be difficult to determine the type of content or actions that may result in

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liability to us and, if we are found to be liable, we may be prevented from operating our business in China. Moreover, the costs of compliance with these regulations may continue to increase as a result of more content being made available by an increasing number of users and third party business parties on our mobile and PC platforms and applications, which may adversely affect our results of operations. Although we have adopted internal procedures to monitor content and to remove offending content once we become aware of any potential or alleged violation, we may not be able to identify all the content that may violate relevant laws and regulations or third party intellectual property rights. Even if we manage to identify and remove offending third party content, we may still be held liable.

In addition, under PRC advertising laws and regulations, we are obligated to monitor the advertising content shown on our platforms and applications to ensure that such content is true, accurate and in full compliance with applicable laws and regulations. In addition, where a special government review is required for specific types of advertisements prior to internet posting, such as advertisements relating to pharmaceuticals, medical instruments, agrochemicals and veterinary pharmaceuticals, we are obligated to confirm that such review has been performed and approval has been obtained. Violation of these laws and regulations may subject us to penalties, including fines, confiscation of our advertising income, orders to cease dissemination of the advertisements and orders to publish an announcement correcting the misleading information. In circumstances involving serious violations by us, PRC governmental authorities may force us to terminate our advertising operations or revoke our licenses.

While we have made significant efforts to ensure that the advertisements shown on our PC and mobile platforms and applications are in full compliance with applicable PRC laws and regulations, we cannot assure you that all the content contained in such advertisements or offers is true and accurate as required by the advertising laws and regulations, especially given the uncertainty in the interpretation of these PRC laws and regulations. If we are found to be in violation of applicable PRC advertising laws and regulations, we may be subject to penalties and our reputation may be harmed, which may have a material and adverse effect on our business, financial condition, results of operations and prospects.

Under the PRC Enterprise Income Tax Law, we may be classified as a PRC “resident enterprise,” which could result in unfavorable tax consequences to us and our shareholders and have a material adverse effect on our results of operations and the value of your investment.

Under the PRC Enterprise Income Tax Law, or the EIT Law, which became effective on January 1, 2008, an enterprise established outside the PRC with “de facto management bodies” within the PRC is considered a “resident enterprise” for PRC enterprise income tax purposes and is generally subject to a uniform 25% enterprise income tax rate on its worldwide income. On April 22, 2009, the State Administration of Taxation, or the SAT, issued the Notice Regarding the Determination of Chinese-Controlled Overseas Incorporated Enterprises as PRC Tax Resident Enterprise on the Basis of De Facto Management Bodies, or SAT Circular 82, which provides certain specific criteria for determining whether the “de facto management body” of a PRC-controlled enterprise that is incorporated offshore is located in China. Further to SAT Circular 82, on July 27, 2011, the SAT issued the Administrative Measures for Enterprise Income Tax of Chinese-Controlled Offshore Incorporated Resident Enterprises (Trial), or SAT Bulletin 45, to provide more guidance on the implementation of SAT Circular 82; the bulletin became effective on September 1, 2011. SAT Bulletin 45 clarified certain issues in the areas of resident status determination, post-determination administration and competent tax authorities’ procedures.

According to SAT Circular 82, an offshore incorporated enterprise controlled by a PRC enterprise or a PRC enterprise group will be considered as a PRC tax resident enterprise by virtue of having its “de facto management body” in China and will be subject to PRC enterprise income tax on its worldwide income only if all of the following conditions are met: (a) the senior management and core management departments in charge of its daily operations function have their presence mainly in the PRC; (b) its financial and human resources decisions are subject to determination or approval by persons or bodies in the PRC; (c) its major assets, accounting books, company seals, and minutes and files of its board and shareholders’ meetings are located or kept in the PRC; and

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(d) more than half of the enterprise’s directors or senior management with voting rights habitually reside in the PRC. SAT Bulletin 45 specifies that when provided with a copy of Chinese tax resident determination certificate from a resident Chinese controlled offshore incorporated enterprise, the payer should not withhold 10% income tax when paying the Chinese-sourced dividends, interest, royalties, etc. to the Chinese controlled offshore incorporated enterprise.

Although SAT Circular 82 and SAT Bulletin 45 only apply to offshore incorporated enterprises controlled by PRC enterprises or PRC enterprise groups and not those controlled by PRC individuals or foreigners, the determination criteria set forth therein may reflect the SAT’s general position on how the term “de facto management body” could be applied in determining the tax resident status of offshore enterprises, regardless of whether they are controlled by PRC enterprises, individuals or foreigners.

If the PRC tax authorities determine that the Company or any of its non-PRC subsidiaries is a PRC resident enterprise for PRC enterprise income tax purposes, then the Company or any such non-PRC subsidiary could be subject to PRC tax at a rate of 25% on its world-wide income, which could materially reduce our net income. In addition, we will also be subject to PRC enterprise income tax reporting obligations.

In that case, although dividends paid by one PRC tax resident to another PRC tax resident should qualify as “tax-exempt income” under the EIT Law, we cannot assure you that dividends by our PRC subsidiaries to our non-PRC holding companies will not be subject to a 10% withholding tax, as the PRC foreign exchange control authorities and the PRC tax authorities have not yet issued guidance with respect to the processing of outbound remittances to entities that are treated as resident enterprises for PRC enterprise income tax purposes.

If the PRC tax authorities determine that the Company is a PRC resident enterprise for PRC enterprise income tax purposes, dividends paid by us to non-PRC holders may be subject to PRC withholding tax, and gains realized on the sale or other disposition of ADSs or ordinary shares may be subject to PRC tax, at a rate of 10% in the case of non-PRC enterprises or 20% in the case of non-PRC individuals (in each case, subject to the provisions of any applicable tax treaty), if such dividends or gains are deemed to be from PRC sources. Any such tax may reduce the returns on your investment in the ADSs.

We face uncertainty with respect to indirect transfer of equity interests in PRC resident enterprises by their non-PRC holding companies.

We face uncertainties regarding the reporting on and consequences of previous private equity financing transactions involving the transfer and exchange of shares in our company by non-resident investors. According to the Notice on Strengthening Administration of Enterprise Income Tax for Share Transfers by Non-PRC Resident Enterprises issued by the PRC State Administration of Taxation on December 10, 2009, with retroactive effect from January 1, 2008, or SAT Circular 698, where a non-resident enterprise transfers the equity interests in a PRC resident enterprise indirectly through a disposition of equity interests in an overseas holding company (other than a purchase and sale of shares issued by a PRC resident enterprise in public securities market), or an Indirect Transfer, and such overseas holding company is located in a tax jurisdiction that: (a) has an effective tax rate less than 12.5% or (b) does not tax foreign income of its residents, the non-resident enterprise, as the seller, shall report such Indirect Transfer to the competent tax authority of the PRC resident enterprise within 30 days of execution of the equity transfer agreement for such Indirect Transfer. The PRC tax authority will examine the true nature of the Indirect Transfer, and if the tax authority considers that the foreign investor has adopted an abusive arrangement without reasonable commercial purposes and for the purpose of avoiding or reducing PRC tax, they will disregard the existence of the overseas holding company that is used for tax planning purposes and re-characterize the Indirect Transfer. As a result, gains derived from such Indirect Transfer may be subject to PRC withholding tax at the rate of up to 10%. SAT Circular 698 also points out that when a non-resident enterprise transfers its equity interests in a PRC resident enterprise to its related parties at a price lower than the fair market value, the competent tax authorities have the power to make a reasonable adjustment on the taxable income of the transaction.

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If our preferential tax treatments are revoked, become unavailable or if the calculation of our tax liability is successfully challenged by the PRC tax authorities, we may be required to pay tax, interest and penalties in excess of our tax provisions, and our results of operations could be materially and adversely affected.

The Chinese government has provided various tax incentives to our subsidiaries in China. These incentives include reduced enterprise income tax rates. For example, under the EIT Law and its implementation rules, the statutory enterprise income tax rate is 25%. However, enterprises which obtained the certificate of new software enterprise were entitled to an exemption of enterprise income tax for the first two years and a 50% reduction of enterprise income tax for the subsequent three years, commencing from the first profit-making year. Zhuhai Juntian and Beijing Security became qualified for this benefit starting in 2010. As a result, Zhuhai Juntian was eligible for a 12.5% preferential tax rate from 2011 to 2013. Beijing Security was eligible for a 0% preferential tax rate from 2010 to 2011, followed by a 12.5% preferential tax rate from 2012 to 2014. Each of Beike Internet, Beijing Network and Conew Network has obtained a new software enterprise certification, and, subject to the approval of competent tax authorities in Beijing, will be entitled to a preferential tax rate. Any increase in the enterprise income tax rate applicable to our PRC subsidiaries or VIEs in China, or any discontinuation or retroactive or future reduction of any of the preferential tax treatments currently enjoyed by our PRC subsidiaries or VIEs in China, could adversely affect our business, financial condition and results of operations. In addition, in the ordinary course of our business, we are subject to complex income tax and other tax regulations and significant judgment is required in the determination of a provision for income taxes. Although we believe our tax provisions are reasonable, if the PRC tax authorities successfully challenge our position and we are required to pay tax, interest and penalties in excess of our tax provisions, our financial condition and results of operations would be materially and adversely affected.

China’s M&A Rules and certain other PRC regulations establish complex procedures for some acquisitions of Chinese companies by foreign investors, which could make it more difficult for us to pursue growth through acquisitions in China.

The Regulations on Mergers and Acquisitions of Domestic Enterprises by Foreign Investors, or the M&A Rules, and other recently adopted regulations and rules concerning mergers and acquisitions established additional procedures and requirements that could make merger and acquisition activities by foreign investors more time consuming and complex. For example, the M&A Rules require that MOFCOM be notified in advance of any change-of-control transaction in which a foreign investor takes control of a PRC domestic enterprise, if (i) any important industry is concerned, (ii) such transaction involves factors that impact or may impact national economic security, or (iii) such transaction will lead to a change in control of a domestic enterprise which holds a famous trademark or PRC time-honored brand. Moreover, the Anti-Monopoly Law promulgated by the Standing Committee of the National People’s Congress on August 30, 2007 and effective as of August 1, 2008 requires that transactions which are deemed concentrations and involve parties with specified turnover thresholds (i.e., during the previous fiscal year, (i) the total global turnover of all operators participating in the transaction exceeds RMB10 billion and at least two of these operators each had a turnover of more than RMB400 million within China, or (ii) the total turnover within China of all the operators participating in the concentration exceeded RMB2 billion, and at least two of these operators each had a turnover of more than RMB400 million within China) must be cleared by MOFCOM before they can be completed. In addition, on February 3, 2011, the General Office of the State Council promulgated a Notice on Establishing the Security Review System for Mergers and Acquisitions of Domestic Enterprises by Foreign Investors, or the Circular 6, which officially established a security review system for mergers and acquisitions of domestic enterprises by foreign investors. Further, on August 25, 2011, MOFCOM promulgated the Regulations on Implementation of Security Review System for the Merger and Acquisition of Domestic Enterprises by Foreign Investors, or the MOFCOM Security Review Regulations, which became effective on September 1, 2011, to implement the Circular 6. Under Circular 6, a security review is required for mergers and acquisitions by foreign investors having “national defense and security” concerns and mergers and acquisitions by which foreign investors may acquire the “de facto control” of domestic enterprises with “national security” concerns. Under the MOFCOM Security Review Regulations, MOFCOM will focus on the substance and actual impact of the transaction when deciding whether

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a specific merger or acquisition is subject to security review. If MOFCOM decides that a specific merger or acquisition is subject to security review, it will submit it to the Inter-Ministerial Panel, an authority established under the Circular 6 led by the National Development and Reform Commission, or NDRC, and MOFCOM under the leadership of the State Council, to carry out security review. The regulations prohibit foreign investors from bypassing the security review by structuring transactions through trusts, indirect investments, leases, loans, control through contractual arrangements or offshore transactions. There is no explicit provision or official interpretation stating that the merging or acquisition of a company engaged in the mobile games business requires security review, and there is no requirement that acquisitions completed prior to the promulgation of the Security Review Circular are subject to MOFCOM review.

In the future, we may grow our business by acquiring complementary businesses. Complying with the requirements of the above-mentioned regulations and other relevant rules to complete such transactions could be time consuming, and any required approval processes, including obtaining approval from the MOFCOM or its local counterparts may delay or inhibit our ability to complete such transactions. It is unclear whether our business would be deemed to be in an industry that raises “national defense and security” or “national security” concerns. However, MOFCOM or other government agencies may publish explanations in the future determining that our business is in an industry subject to the security review, in which case our future acquisitions in the PRC, including those by way of entering into contractual control arrangements with target entities, may be closely scrutinized or prohibited. Our ability to expand our business or maintain or expand our market share through future acquisitions would as such be materially and adversely affected.

The approval of the China Securities Regulatory Commission may be required in connection with this offering and, if required, we cannot assure you that we will be able to obtain it.

On August 8, 2006, six PRC regulatory agencies, namely, the MOC, the State Assets Supervision and Administration Commission, SAT, the State Administration for Industry and Commerce, the CSRC and SAFE, jointly adopted the 2006 M&A Rules, which became effective on September 8, 2006, and were amended on June 22, 2009. The 2006 M&A Rules purport to require, among other things, offshore special purpose vehicles, or SPVs, formed for the purpose of seeking a public listing on an overseas stock exchange through acquisitions of PRC domestic companies or assets and controlled by PRC companies or individuals, to obtain the approval of the CSRC prior to publicly listing their securities on an overseas stock exchange.

Our PRC counsel has advised that the 2006 M&A Rules do not require us to obtain prior CSRC approval for the listing and trading of the ADSs on the NYSE, given that:

However, there are uncertainties regarding the interpretation and application of PRC law, and there can be no assurance that the PRC government will ultimately take a view that is not contrary to that of our PRC legal counsel. If it is determined that CSRC approval is required for this offering, we may face sanctions by CSRC or other PRC regulatory agencies for failure to seek the CSRC approval for this offering. These sanctions may include fines and penalties on our operations in the PRC although, to our knowledge, no definitive rules or interpretations have been issued to determine or quantify such fines or penalties, delays or restrictions on the repatriation of the proceeds from this offering into the PRC, restrictions on or prohibition of the payments or remittance of dividends by our PRC subsidiaries, or other actions that may have a material adverse effect on our

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business and the trading price of the ADSs. CSRC or other PRC regulatory agencies may also take actions requiring us, or making it advisable to us, to halt this offering before the settlement and delivery of the ADSs that we are offering. Consequently, if you engage in market trading or other activities in anticipation of and prior to the settlement and delivery of the ADSs we are offering, you would be doing so at the risk that settlement and delivery may not occur.

PRC regulations relating to offshore investment activities by PRC residents may limit our PRC subsidiaries’ ability to increase their registered capital or distribute profits to us or otherwise expose us to liability and penalties under PRC law.

The SAFE promulgated the Notice on Relevant Issues Concerning Foreign Exchange Administration for PRC Residents Engaging in Financing and Roundtrip Investments via Overseas Special Purpose Vehicles, or SAFE Circular 75, and other related regulations in October 2005 that require PRC citizens or residents to register with SAFE or its local branch in connection with their establishment or control of an offshore entity established for the purpose of overseas equity financing involving a roundtrip investment whereby the offshore entity acquires or controls onshore assets or equity interests held by the PRC citizens or residents. In addition, such PRC citizens or residents must update their SAFE registrations when the offshore SPV undergoes material events relating to increases or decreases in investment amount, transfers or exchanges of shares, mergers or divisions, long-term equity or debt investments, external guarantees, or other material events that do not involve roundtrip investments. Subsequent regulations further clarified that PRC subsidiaries of an offshore company governed by the SAFE regulations are required to coordinate and supervise the filing of SAFE registrations in a timely manner by the offshore holding company’s shareholders who are PRC citizens or residents. If these shareholders fail to comply, the PRC subsidiaries are required to report to the local SAFE branches. If our shareholders who are PRC citizens or residents do not complete their registration with the local SAFE branches, our PRC subsidiaries may be prohibited from distributing their profits and proceeds from any reduction in capital, share transfer or liquidation to us, and we may be restricted in our ability to contribute additional capital to our PRC subsidiaries. Moreover, failure to comply with the SAFE registration and amendment requirements described above could result in liability under PRC laws for evasion of applicable foreign exchange restrictions.

Mr. Jun Lei, Mr. Sheng Fu and Mr. Ming Xu have completed foreign exchange registration in connection with our financings and share transfer that were completed before the end of 2013. However, we may not be fully informed of the identities of all our beneficial owners who are PRC citizens or residents, and we cannot compel our beneficial owners to comply with SAFE registration requirements. As a result, we cannot assure you that all of our shareholders or beneficial owners who are PRC citizens or residents have complied with, and will in the future make or obtain any applicable registrations or approvals required by, SAFE regulations. Failure by such shareholders or beneficial owners to comply with SAFE regulations, or failure by us to amend the foreign exchange registrations of our PRC subsidiary, could subject us to fines or legal sanctions, restrict our overseas or cross-border investment activities, limit our subsidiaries’ ability to make distributions or pay dividends or affect our ownership structure, which could adversely affect our business and prospects.

Failure to comply with PRC regulations regarding the registration requirements for employee stock ownership plans or share option plans may subject the PRC plan participants or us to fines and other legal or administrative sanctions.

On February 15, 2012, SAFE promulgated the Notices on Issues Concerning the Foreign Exchange Administration for Domestic Individuals Participating in Stock Incentive Plans of Overseas Publicly-Listed Companies, or the Stock Option Rules, which replaced the Application Procedures of Foreign Exchange Administration for Domestic Individuals Participating in Employee Stock Ownership Plans or Stock Option Plans of Overseas Publicly-Listed Companies issued by SAFE on March 28, 2007. Under the Stock Option Rules and other relevant rules and regulations, PRC residents who participate in stock incentive plan in an overseas publicly-listed company are required to register with SAFE or its local branches and complete certain other procedures. Participants of a stock incentive plan who are PRC residents must retain a qualified PRC agent,

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which could be a PRC subsidiary of such overseas publicly listed company or another qualified institution selected by such PRC subsidiary, to conduct the SAFE registration and other procedures with respect to the stock incentive plan on behalf of its participants. Such participants must also retain an overseas entrusted institution to handle matters in connection with their exercise of stock options, the purchase and sale of corresponding stocks or interests and fund transfers. In addition, the PRC agent is required to amend the SAFE registration with respect to the stock incentive plan if there is any material change to the stock incentive plan, the PRC agent or the overseas entrusted institution or other material changes. We and our PRC employees who have been granted stock options will be subject to these regulations upon the completion of this offering. Failure of our PRC stock option holders to complete their SAFE registrations may subject these PRC residents to fines and legal sanctions and may also limit our ability to contribute additional capital into our PRC subsidiaries, limit our PRC subsidiaries’ ability to distribute dividends to us, or otherwise materially adversely affect our business.

PRC regulation of loans to, and direct investment in, PRC entities by offshore holding companies and governmental control of currency conversion may restrict or prevent us from using the proceeds of our initial public offering to make loans to our PRC subsidiaries and VIEs or to make additional capital contributions to our PRC subsidiaries, which may materially and adversely affect our liquidity and our ability to fund and expand our business.

We are an offshore holding company conducting our operations in China through our PRC subsidiaries and VIEs. We may make loans to our PRC subsidiaries and VIEs, or we may make additional capital contributions to our PRC subsidiaries, or we may establish new PRC subsidiaries and make capital contributions to these new PRC subsidiaries, or we may acquire offshore entities with business operations in China in an offshore transaction.

Most of these uses are subject to PRC regulations and approvals. For example, loans by us to our wholly owned PRC subsidiaries to finance their activities cannot exceed statutory limits and must be registered with the local counterpart of SAFE. If we decide to finance our wholly owned PRC subsidiaries by means of capital contributions, these capital contributions must be approved by the MOC or its local counterpart. Due to the restrictions imposed on loans in foreign currencies extended to any PRC domestic companies, we are not likely to make such loans to our VIEs, which are PRC domestic companies. Further, we are not likely to finance the activities of our VIEs by means of capital contributions due to regulatory restrictions relating to foreign investment in PRC domestic enterprises engaged in mobile internet services, online advertising, online games and related businesses.

On August 29, 2008, SAFE promulgated the Circular on the Relevant Operating Issues Concerning the Improvement of the Administration of the Payment and Settlement of Foreign Currency Capital of Foreign-Invested Enterprises, or SAFE Circular 142, regulating the conversion by a foreign-invested enterprise of foreign currency registered capital into Renminbi by restricting how the converted Renminbi may be used. SAFE Circular 142 provides that Renminbi capital converted from foreign currency registered capital of a foreign-invested enterprise may only be used for purposes within the business scope approved by the applicable governmental authority and may not be used for equity investments within the PRC. In addition, SAFE strengthened its oversight of the flow and use of the Renminbi capital converted from the foreign currency registered capital of a foreign-invested company. The use of such Renminbi capital may not be altered without SAFE approval, and such Renminbi capital may not in any case be used to repay Renminbi loans if the proceeds of such loans have not been used. Violations of SAFE Circular 142 could result in severe monetary or other penalties. Furthermore, SAFE promulgated a circular on November 9, 2010, known as Circular No. 59, which tightens the examination of the authenticity of settlement of net proceeds from our initial public offering. SAFE further promulgated the Circular on Further Clarification and Regulation of the Issues Concerning the Administration of Certain Capital Account Foreign Exchange Businesses, or Circular 45, on November 9, 2011, which expressly prohibits foreign-invested enterprises from using registered capital settled in Renminbi converted from foreign currencies to grant loans through entrustment arrangements with a bank, repay inter-company loans or repay bank loans that have been transferred to a third party. Circular 142, Circular 59 and

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Circular 45 may significantly limit our ability to transfer the net proceeds from this offering to our PRC subsidiaries and to convert such proceeds into Renminbi, which may adversely affect our liquidity and our ability to fund and expand our business in the PRC.

In light of the various requirements imposed by PRC regulations on loans to and direct investment in PRC entities by offshore holding companies, including SAFE Circular 142, we cannot assure you that we will be able to complete the necessary government registrations or obtain the necessary government approvals on a timely basis, for at all, with respect to future loans by us to our PRC subsidiaries or with respect to future capital contributions by us to our PRC subsidiaries. If we fail to complete such registrations or obtain such approvals, our ability to use the proceeds we received from our initial public offering and to capitalize or otherwise fund our PRC operations may be negatively affected, which could materially and adversely affect our liquidity and our ability to fund and expand our business.

Our PRC subsidiaries and VIEs are subject to restrictions on paying dividends or making other payments to us, which may restrict our ability to satisfy our liquidity requirements.

We are a holding company registered in the Cayman Islands. We rely principally on dividends and other distributions from our PRC subsidiaries for our cash and financing requirements, such as the funds necessary to pay dividends and other cash distributions to our shareholders, including holders of the ADSs, and service any debt we may incur. Current PRC regulations permit our PRC subsidiaries to pay dividends to us only out of their accumulated profits, if any, determined in accordance with Chinese accounting standards and regulations. In addition, each of our PRC subsidiaries is required to set aside at least 10% of its after-tax profits after making up previous years’ accumulated losses each year, if any, to fund certain reserve funds until the total amount set aside reaches 50% of its registered capital. These reserves are not distributable as cash dividends. Furthermore, if our PRC subsidiaries incur debt on their own behalf in the future, the instruments governing the debt may restrict their ability to pay dividends or make other payments to us, which may restrict our ability to satisfy our liquidity requirements.

In addition, the EIT Law and its implementation rules provide that withholding tax rate of 10% will be applicable to dividends payable by Chinese companies to non-PRC-resident enterprises unless otherwise exempted or reduced according to treaties or arrangements between the PRC central government and governments of other countries or regions where the non-PRC-resident enterprises are incorporated.

Fluctuations in exchange rates could have a material adverse effect on our results of operations and the value of your investment.

The value of the Renminbi against the U.S. dollar and other currencies is affected by, among other things, changes in China’s political and economic conditions and China’s foreign exchange policies. On July 21, 2005, the PRC government changed its decade-old policy of pegging the value of the Renminbi to the U.S. dollar, and the Renminbi appreciated more than 20% against the U.S. dollar over the following three years. During the period between July 2008 and June 2010, the exchange rate between the Renminbi and the U.S. dollar had been stable and traded within a narrow band. However, the Renminbi fluctuated significantly during that period against other freely traded currencies, in tandem with the U.S. dollar. Since June 2010, the Renminbi has generally appreciated against the U.S. dollar, but there have also been periods, most recently beginning in February 2014, when it depreciated against the U.S. dollar. It is difficult to predict how long the current situation may last and when and how this relationship between the Renminbi and the U.S. dollar may change again. However, the People’s Bank of China regularly intervenes in the foreign exchange market to limit fluctuations in Renminbi exchange rates and achieve policy goals.

There remains significant international pressure on the Chinese government to adopt a flexible currency policy to allow the Renminbi to appreciate against the U.S. dollar. Significant revaluation of the Renminbi may have a material adverse effect on your investment. The majority of our revenues and costs are denominated in

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Renminbi. Any significant revaluation of Renminbi may materially and adversely affect our revenues, earnings and financial position, and the value of, and any dividends payable on, the ADSs in U.S. dollars. For example, to the extent that we need to convert U.S. dollars we receive from this initial public offering into Renminbi to pay our operating expenses, appreciation of the Renminbi against the U.S. dollar would have an adverse effect on the Renminbi amount we would receive from the conversion. Conversely, a significant depreciation of the Renminbi against the U.S. dollar may significantly reduce the U.S. dollar equivalent of our earnings, which in turn could adversely affect the price of the ADSs.

Very limited hedging options are available in China to reduce our exposure to exchange rate fluctuations. To date, we have not entered into any hedging transactions in an effort to reduce our exposure to foreign currency exchange risk. While we may decide to enter into hedging transactions in the future, the availability and effectiveness of these hedges may be limited and we may not be able to adequately hedge our exposure or at all. In addition, our currency exchange losses may be magnified by PRC exchange control regulations that restrict our ability to convert Renminbi into foreign currency. As a result, fluctuations in exchange rates may have a material adverse effect on your investment.

Governmental control of currency conversion may limit our ability to utilize our cash balance effectively and affect the value of your investment.

The PRC government imposes control on the convertibility of the Renminbi into foreign currencies and, in certain cases, the remittance of currency out of China. We receive a substantial portion of our revenues in Renminbi. Under existing PRC foreign exchange regulations, payments of current account items, including profit distributions, and trade and service-related foreign exchange transactions, can be made in foreign currencies without prior SAFE approval by complying with certain procedural requirements. Therefore, our PRC subsidiaries are able to pay dividends in foreign currencies to us without prior approval from SAFE. However, approval from or registration with appropriate government authorities is required where Renminbi is to be converted into foreign currency and remitted out of China to pay capital expenses such as the repayment of loans denominated in foreign currencies. The PRC government may also at its discretion restrict access to foreign currencies for current account transactions in the future. If the foreign exchange control system prevents us from obtaining sufficient foreign currencies to satisfy our foreign currency demands, we may not be able to pay dividends in foreign currencies to our shareholders, including holders of the ADSs.

Proceedings instituted recently by the SEC against five PRC-based accounting firms, including our independent registered public accounting firm, could result in financial statements being determined to not be in compliance with the requirements of the Securities Exchange Act of 1934, as amended, or the Exchange Act.

In December 2012, the SEC instituted administrative proceedings under Rule 102(e)(1)(iii) of the SEC’s Rules of Practice against five PRC-based accounting firms, including our independent registered public accounting firm, alleging that these firms had violated U.S. securities laws and the SEC’s rules and regulations thereunder by failing to provide to the SEC the firms’ work papers related to their audits of certain PRC-based companies that are publicly traded in the United States. Rule 102(e)(1)(iii) authorizes the SEC to deny any person, temporarily or permanently, the ability to practice before the SEC if found by the SEC, after notice and opportunity for a hearing, to have willfully violated any such laws or rules and regulations. On January 22, 2014, an initial administrative law decision was issued, sanctioning four of these accounting firms and suspending them from practicing before the SEC for a period of six months. On February 12, 2014, these four PRC-based accounting firms appealed to the SEC against this sanction. Accordingly, the sanction will not become effective until after a full appeal process is concluded and a final decision is issued by the SEC. If the SEC’s final decision is decided against the accounting firms, the accounting firms can then further appeal the final decision in the federal appellate courts. While we cannot predict the outcome of these proceedings, if the accounting firms, including our independent registered public accounting firm, were denied, temporarily or permanently, the ability to practice before the SEC, and we are unable to timely find another registered public accounting firm which can

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audit and issue a report on our financial statements, our financial statements could be determined to not be in compliance with the requirements for financial statements in connection with this offering under the Securities Act of 1933, as amended, or the Securities Act, or those of public companies registered under the Exchange Act after our completion of this offering. Such a determination could ultimately lead to the delay or abandonment of this offering, or, after the completion of this offering, delisting of the ADSs from the NYSE or deregistration from the SEC, or both, which would substantially reduce or effectively terminate the trading of the ADSs in the United States.

Increases in labor costs in the PRC may adversely affect our business and our profitability.

The Chinese has experienced increases in labor costs in recent years. China’s overall economy and the average wage in China are expected to continue to grow. The average wage level for our employees has also increased in recent years.

In addition, we have been subject to stricter regulatory requirements in terms of entering into labor contracts with our employees and paying various statutory employee benefits, including pensions, housing allowance, medical insurance, work-related injury insurance, unemployment insurance and maternity insurance to designated government agencies for the benefit of our employees. Pursuant to the PRC Labor Contract Law, or the Labor Contract Law, which became effective in January 2008 and its implementation rules effective as of September 2008, employers are subject to stricter requirements in terms of signing labor contracts, minimum wages, paying remuneration, determining the term of employees’ probation and unilaterally terminating labor contracts. In the event that we decide to terminate some of our employees or otherwise change our employment or labor practices, the Labor Contract Law and its implementation rules may limit our ability to effect those changes in a desirable or cost-effective manner, which could adversely affect our business and results of operations. On October 28, 2010, the Standing Committee of the National People’s Congress promulgated the PRC Social Insurance Law, or the Social Insurance Law, which became effective on July 1, 2011. According to the Social Insurance Law, employees must participate in pension insurance, work-related injury insurance, medical insurance, unemployment insurance and maternity insurance and the employers must, together with their employees or separately, pay the social insurance premiums for such employees.

We expect that our labor costs, including wages and employee benefits, will continue to increase. Unless we are able to pass on these increased labor costs to our users by increasing prices for our products or services, our profitability and results of operations may be materially and adversely affected. Also, as the interpretation and implementation of labor-related laws and regulations are still evolving, we cannot assure you that our employment practices do not and will not violate labor-related laws and regulations in China, which may subject us to labor disputes or government investigations. If we are deemed to have violated relevant labor laws and regulations, we could be required to provide additional compensation to our employees, and our business, financial condition and results of operations could be materially and adversely affected.

If the custodians or authorized users of controlling non-tangible assets of our company, including our corporate chops and seals, fail to fulfill their responsibilities, or misappropriate or misuse these assets, our business and operations could be materially and adversely affected.

Under PRC law, legal documents for corporate transactions are executed using the chops or seals of the signing entity, or with the signature of a legal representative whose designation is registered and filed with the relevant branch of the SAIC.

Although we usually utilize chops to enter into contracts, the designated legal representatives of each of our PRC subsidiaries and VIEs have the apparent authority to enter into contracts on behalf of such entities without chops and bind such entities. Some designated legal representatives of our PRC subsidiaries and VIEs are members of our senior management team who have signed employment undertaking letters with us or our PRC subsidiaries and VIEs under which they agree to abide by various duties they owe to us. In order to maintain the

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physical security of our chops and the chops of our PRC entities, we generally store these items in secured locations accessible only by the authorized personnel of each of our subsidiaries and VIEs. Although we monitor such authorized personnel, there is no assurance such procedures will prevent all instances of abuse or negligence. Accordingly, if any of our authorized personnel misuse or misappropriate our corporate chops or seals, we could encounter difficulties in maintaining control over the relevant entities and experience significant disruption to our operations. If a designated legal representative obtains control of the chops in an effort to obtain control over any of our PRC subsidiaries or VIEs, we, our PRC subsidiaries or VIEs would need to pass a new shareholder or board resolution to designate a new legal representative and we would need to take legal action to seek the return of the chops, apply for new chops with the relevant authorities, or otherwise seek legal redress for the violation of the representative’s fiduciary duties to us, which could involve significant time and resources and divert management attention away from our regular business. In addition, the affected entity may not be able to recover corporate assets that are sold or transferred out of our control in the event of such a misappropriation if a transferee relies on the apparent authority of the representative and acts in good faith.

Our auditor, like other independent registered public accounting firms operating in China, is not permitted to be subject to inspection by the Public Company Accounting Oversight Board and, as such, investors may be deprived of the benefits of such inspection.

Our independent registered public accounting firm that issued the audit reports included in this prospectus filed with the SEC, as an auditor of companies that are traded publicly in the United States and a firm registered with the Public Company Accounting Oversight Board (United States), or PCAOB, is required by the laws of the United States to undergo regular inspections by PCAOB to assess its compliance with the laws of the United States and professional standards. Because our auditor is located in China, a jurisdiction where PCAOB is currently unable to conduct inspections without the approval of the PRC authorities, our auditor, like other independent registered public accounting firms operating in China, is currently not inspected by PCAOB.

Inspections of other firms that PCAOB has conducted outside of China have identified deficiencies in those firms’ audit procedures and quality control procedures, which may be addressed as part of the inspection process to improve future audit quality. The inability of PCAOB to conduct inspections of independent registered public accounting firms operating in China makes it more difficult to evaluate the effectiveness of our auditor’s audit procedures or quality control procedures. As a result, investors may be deprived of the benefits of PCAOB inspections and lose confidence in our reported financial information and procedures and the quality of our financial statements.

Risks Relating to the ADSs and this Offering

An active trading market for our shares or the ADSs may not develop and the trading price for the ADSs may fluctuate significantly.

We have applied to list the ADSs on the NYSE. Prior to the completion of this offering, there has been no public market for the ADSs or our ordinary shares underlying the ADSs, and we cannot assure you that a liquid public market for the ADSs will develop. If an active public market for the ADSs does not develop following the completion of this offering, the market price and liquidity of the ADSs may be materially and adversely affected. Even if an active public market for our ordinary shares or the ADSs develops, we cannot assure you that it will continue. The initial public offering price for the ADSs will be determined by negotiation between us and the underwriters based upon several factors, and we can provide no assurance that the trading price of the ADSs after this offering will not decline below the initial public offering price. As a result, investors in the ADSs may experience a significant decrease in the value of their ADSs.

The trading price of the ADSs is likely to be volatile, which could result in substantial losses to investors.

The trading price of the ADSs is likely to be volatile and could fluctuate widely due to factors beyond our control. This may happen because of broad market and industry factors, like the performance and fluctuation in

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the market prices or the underperformance or deteriorating financial results of other similarly situated companies in China that have listed their securities in the United States in recent years. The securities of some of these companies have experienced significant volatility since their initial public offerings, including, in some cases, substantial declines in trading price. The trading performance of these Chinese companies’ securities after their offerings, including the securities of companies in the internet and mobile internet businesses, may affect the attitudes of investors toward Chinese companies listed in the United States, which consequently may impact the trading performance of the ADSs, regardless of our actual operating performance. In addition, any negative news or perceptions about inadequate corporate governance practices or fraudulent accounting or other practices at other Chinese companies may also negatively affect the attitudes of investors towards Chinese companies in general, including us, regardless of whether we have engaged in such practices. In addition, securities markets may from time to time experience significant price and volume fluctuations that are not related to our operating performance, such as the large decline in share prices in the United States, China and other jurisdictions in late 2008, early 2009, the third quarter of 2011 and the second quarter of 2012, which may have a material adverse effect on the market price of the ADSs.

In addition to market and industry factors, the price and trading volume for the ADSs may be highly volatile due to factors specific to our own operations, including the following:

Any of these factors may result in large and sudden changes in the trading volume and price of the ADSs.

We are an emerging growth company within the meaning of the Securities Act and may take advantage of certain reduced reporting requirements.

We are an “emerging growth company,” as defined in the JOBS Act, and we may take advantage of certain exemptions from various requirements applicable to other public companies that are not emerging growth companies including, most significantly, not being required to comply with the auditor attestation requirements of Section 404 for so long as we are an emerging growth company until the fifth anniversary from the date of our initial listing.

The JOBS Act also provides that an emerging growth company does not need to comply with any new or revised financial accounting standards until such date that a private company is otherwise required to comply

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with such new or revised accounting standards. If we elect not to comply with the abovementioned auditor attestation requirements or to comply with new or revised accounting standards, our investors may not have access to certain information they may deem important.

If securities or industry analysts cease to publish research or reports about our business, or if they adversely change their recommendations regarding the ADSs, the market price for the ADSs and trading volume could decline.

The trading market for the ADSs will be influenced by research or reports that industry or securities analysts publish about our business. If one or more analysts who cover us downgrade the ADSs, the market price for the ADSs would likely decline. If one or more of these analysts cease to cover us or fail to regularly publish reports on us, we could lose visibility in the financial markets, which, in turn, could cause the market price or trading volume for the ADSs to decline.

The sale or availability for sale, or perceived sale or availability for sale, of substantial amounts of our ordinary shares could adversely affect their market price.

Sales of substantial amounts of our ordinary shares in the public market after the completion of this offering, whether directly or represented by ADSs, or the perception that these sales could occur, could adversely affect the market price of the ADSs and could materially impair our ability to raise capital through equity offerings in the future. There will be 1,382,493,689 ordinary shares outstanding immediately after this offering, or 1,400,493,689 ordinary shares if the underwriters exercise their options to purchase additional ADSs in full. The ADSs sold in this offering will be freely tradable without restriction or further registration under the Securities Act of 1933, as amended, or the Securities Act, and ordinary shares held by our existing shareholders may also be sold in the public market in the future subject to the restrictions in Rule 144 and Rule 701 under the Securities Act and the applicable lock-up agreements. In connection with this offering, we and our officers, directors and our shareholders have agreed not to sell any shares or ADSs for 180 days after the date of this prospectus without the prior written consent of the underwriters. However, the underwriters may release the securities subject to lock-up agreements from the lock-up restrictions at any time, subject to applicable regulations of the Financial Industry Regulatory Authority, Inc. In addition, 44,790,000 Class A ordinary shares underlying our outstanding restricted shares as of the closing of this offering will become eligible for sale in the public market to the extent permitted by the provisions of various vesting agreements, the lock-up agreements and Rules 144 and 701 under the Securities Act. We may also issue additional options, restricted shares or other share-based awards in the future which may be exercised for additional Class A ordinary shares. We cannot predict what effect, if any, market sales of securities held by our significant shareholders or any other shareholder or the availability of these securities for future sale will have on the market price of the ADSs. In addition, in connection with the Concurrent Private Placement, we will enter into a registration rights agreement with Kingsoft Corporation, Xiaomi Ventures Limited and Baidu Holdings Limited, pursuant to which we will grant them Form F-3 registration rights and the piggyback registration rights. Registration of these shares under the Securities Act may result in these shares becoming freely tradable without restriction under the Securities Act immediately upon the effectiveness of the registration. Sales of these registered shares in the public market, or the perception that such sales could occur, could cause the price of our ADSs to decline. See “Underwriting” and “Shares Eligible for Future Sale” for a more detailed description of the restrictions on selling our securities after this offering.

Because the initial public offering price is substantially higher than the pro forma net tangible book value per share, you will experience immediate and substantial dilution.

If you purchase ADSs in this offering, you will pay more for each ADS than the corresponding amount paid by existing shareholders for their Class A ordinary shares. As a result, you will experience immediate and substantial dilution of approximately US$11.50 per ADS (assuming that no outstanding options or other share-based awards to acquire Class A ordinary shares are exercised). This number represents the difference between our pro forma as adjusted net tangible book value per ADS of US$0.20 as of December 31, 2013, after giving effect to this offering and the assumed initial public offering price of US$13.50 per ADS, the mid-point of the estimated initial public offering price range set forth on the front cover of this prospectus. See “Dilution” for a

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more complete description of how the value of your investment in the ADSs will be diluted upon the completion of this offering.

Our articles of association contain anti-takeover provisions that could have a material adverse effect on the rights of holders of our ordinary shares and ADSs.

We will adopt our fourth amended and restated articles of association that will become effective immediately upon completion of this offering. Our new articles of association contain provisions to limit the ability of others to acquire control of our company or cause us to engage in change-of-control transactions. These provisions could have the effect of depriving our shareholders of an opportunity to sell their shares at a premium over prevailing market prices by discouraging third parties from seeking to obtain control of our company in a tender offer or similar transaction. For example, our board of directors has the authority, without further action by our shareholders, to issue preferred shares in one or more series and to fix their designations, powers, preferences, privileges, and relative participating, optional or special rights, and the qualifications, limitations or restrictions, including dividend rights, conversion rights, voting rights, terms of redemption and liquidation preferences, any or all of which may be greater than the rights associated with our ordinary shares, in the form of ADS or otherwise. Preferred shares could be issued quickly with terms calculated to delay or prevent a change in control of our company or make removal of management more difficult. If our board of directors decides to issue preferred shares, the price of the ADSs may fall and the voting and other rights of the holders of our ordinary shares and the ADSs may be materially and adversely affected.

You may face difficulties in protecting your interests, and your ability to protect your rights through U.S. courts may be limited, because we are incorporated under Cayman Islands law.

We are an exempted company limited by shares incorporated under the laws of the Cayman Islands. Our corporate affairs are governed by our memorandum and articles of association, the Companies Law (2013 Revision) of the Cayman Islands and the common law of the Cayman Islands. The rights of shareholders to take action against the directors, actions by minority shareholders and the fiduciary responsibilities of our directors to us under Cayman Islands law are to a large extent governed by the common law of the Cayman Islands. The common law of the Cayman Islands is derived in part from comparatively limited judicial precedent in the Cayman Islands as well as from the common law of England, the decisions of whose courts are of persuasive authority, but are not binding, on a court in the Cayman Islands. The rights of our shareholders and the fiduciary responsibilities of our directors under Cayman Islands law are not as clearly established as they would be under statutes or judicial precedent in some jurisdictions in the United States. In particular, the Cayman Islands has a less developed body of securities laws than the United States. Some U.S. states, such as Delaware, have more fully developed and judicially interpreted bodies of corporate law than the Cayman Islands. In addition, Cayman Islands companies may not have standing to initiate a shareholder derivative action in a federal court of the United States.

Shareholders of Cayman Islands exempted companies like us have no general rights under Cayman Islands law to inspect corporate records or to obtain copies of lists of shareholders of these companies. Our directors have discretion under our existing articles of association to determine whether or not, and under what conditions, our corporate records may be inspected by our shareholders, but are not obliged to make them available to our shareholders. This may make it more difficult for you to obtain the information needed to establish any facts necessary for a shareholder motion or to solicit proxies from other shareholders in connection with a proxy contest.

Certain corporate governance practices in the Cayman Islands, which is our home country, differ significantly from requirements for companies incorporated in other jurisdictions such as the U.S. Currently, we do not plan to rely on home country practice with respect to any corporate governance matter. However, if we choose to follow home country practice in the future, our shareholders may be afforded less protection than they otherwise would under rules and regulations applicable to U.S. domestic issuers.

As a result of all of the above, public shareholders may have more difficulty in protecting their interests in the face of actions taken by management, members of the board of directors or controlling shareholders than they

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would as public shareholders of a company incorporated in the United States. For a discussion of significant differences between the provisions of the Companies Law of the Cayman Islands and the laws applicable to companies incorporated in the United States and their shareholders, see “Description of Share Capital—Differences in Corporate Law.”

Judgments obtained against us by our shareholders may not be enforceable in our home jurisdiction.

We are a Cayman Islands company and a substantial majority of our assets are located outside of the United States. A significant percentage of our current operations are conducted in China. In addition, a significant majority of our current directors and officers are nationals and residents of countries other than the United States. As a result, it may be difficult or impossible for you to bring an action against us or against these individuals in the United States in the event that you believe that your rights have been infringed under the United States federal securities laws or otherwise. Even if you are successful in bringing an action of this kind, the laws of the Cayman Islands and of China may render you unable to enforce a judgment against our assets or the assets of our directors and officers.

There are uncertainties as to whether Cayman Islands courts would:

There is no statutory recognition in the Cayman Islands of judgments obtained in the United States, although the courts of the Cayman Islands will in certain circumstances recognize and enforce a non-penal judgment of a foreign court of competent jurisdiction without retrial on the merits. For more information regarding the relevant laws of the Cayman Islands and China, see “Enforceability of Civil Liabilities.”

We have not determined a specific use for a portion of the net proceeds from this offering and the Concurrent Private Placement, and we may use these proceeds in ways with which you may not agree, and such use may not produce income or increase our ADS price.

We have not determined a specific use for a portion of the net proceeds of this offering, and our management will have considerable discretion in deciding how to apply them. You will not have the opportunity to assess whether the proceeds are being used appropriately before you make your investment decision. You must rely on the judgment of our management regarding the application of the net proceeds of this offering. We cannot assure you that the net proceeds will be used in a manner that would improve our results of operations or increase the ADS price, or that these net proceeds will be placed only in investments that generate income or appreciate in value.

The voting rights of holders of ADSs are limited by the terms of the deposit agreement, and you may not be able to exercise your right to vote your Class A ordinary shares.

As a holder of the ADSs, you will only be able to exercise the voting rights with respect to the underlying Class A ordinary shares in accordance with the provisions of the deposit agreement. Under the deposit agreement, you must vote by giving voting instructions to the depositary. Upon receipt of your voting instructions, the depositary will endeavor to vote the underlying Class A ordinary shares in accordance with those instructions. You will not be able to directly exercise your right to vote with respect to the underlying shares unless you withdraw the shares. Under our fourth amended and restated memorandum and articles of association which will be effective immediately prior to the completion of this offering, the minimum notice period required for convening a general meeting is 14 calendar days. When a general meeting is convened, you may not receive sufficient advance notice to withdraw the shares underlying your ADSs to allow you to vote with respect to any

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specific matter. If we ask for your instructions, the depositary will notify you of the upcoming vote and will arrange to deliver our voting materials to you. We cannot assure you that you will receive the voting materials in time to ensure that you can instruct the depositary to vote your shares. In addition, the depositary and its agents are not responsible for failing to carry out voting instructions or for their manner of carrying out your voting instructions. This means that you may not be able to exercise your right to vote and you may have no legal remedy if the shares underlying your ADSs are not voted as you requested.

The depositary for the ADSs will give us a discretionary proxy to vote our Class A ordinary shares underlying your ADSs if you do not vote at shareholders’ meetings, except in limited circumstances, which could adversely affect your interests.

Under the deposit agreement for the ADSs, if you do not vote, the depositary will give us a discretionary proxy to vote our Class A ordinary shares underlying your ADSs at shareholders’ meetings unless:

The effect of this discretionary proxy is that if you do not vote at shareholders’ meetings, you cannot prevent our Class A ordinary shares underlying your ADSs from being voted, except under the circumstances described above. This may make it more difficult for shareholders to influence the management of our company. Holders of our Class A ordinary shares are not subject to this discretionary proxy.

Because we do not expect to pay dividends in the foreseeable future after this offering, you must rely on price appreciation of the ADSs for return on your investment.

We currently intend to retain most, if not all, of our available funds and any future earnings after this offering to fund the development and growth of our business. As a result, we do not expect to pay any cash dividends in the foreseeable future. Therefore, you should not rely on an investment in the ADSs as a source for any future dividend income.

Our board of directors has discretion as to whether to distribute dividends, subject to applicable laws. Even if our board of directors decides to declare and pay dividends, the timing, amount and form of future dividends, if any, will depend on, among other things, our future results of operations and cash flow, our capital requirements and surplus, the amount of distributions, if any, received by us from our subsidiary, our financial condition, contractual restrictions and other factors deemed relevant by our board of directors. Accordingly, the return on your investment in the ADSs will likely depend entirely upon any future price appreciation of the ADSs. There is no guarantee that the ADSs will appreciate in value after this offering or even maintain the price at which you purchased the ADSs. You may not realize a return on your investment in the ADSs and you may even lose your entire investment in the ADSs.

You may not receive dividends or other distributions on our Class A ordinary shares and you may not receive any value for them, if it is illegal or impractical to make them available to you.

The depositary of the ADSs has agreed to pay to you the cash dividends or other distributions it or the custodian receives on Class A ordinary shares or other deposited securities underlying the ADSs, after deducting its fees and expenses. You will receive these distributions in proportion to the number of Class A ordinary shares your ADSs represent. However, the depositary is not responsible if it decides that it is unlawful or impractical to

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make a distribution available to any holders of ADSs. For example, it would be unlawful to make a distribution to a holder of ADSs if it consists of securities that require registration under the Securities Act but that are not properly registered or distributed under an applicable exemption from registration. The depositary may also determine that it is not feasible to distribute certain property through the mail. Additionally, the value of certain distributions may be less than the cost of mailing them. In these cases, the depositary may determine not to distribute such property. We have no obligation to register under U.S. securities laws any ADSs, ordinary shares, rights or other securities received through such distributions. We also have no obligation to take any other action to permit the distribution of ADSs, ordinary shares, rights or anything else to holders of ADSs. This means that you may not receive distributions we make on our Class A ordinary shares or any value for them if it is illegal or impractical for us to make them available to you. These restrictions may cause a material decline in the value of the ADSs.

You may not be able to participate in rights offerings and may experience dilution of your holdings.

We may, from time to time, distribute rights to our shareholders, including rights to acquire securities. Under the deposit agreement, the depositary will not distribute rights to holders of ADSs unless the distribution and sale of rights and the securities to which these rights relate are either exempt from registration under the Securities Act with respect to all holders of ADSs, or are registered under the provisions of the Securities Act. The depositary may, but is not required to, attempt to sell these undistributed rights to third parties, and may allow the rights to lapse. We may be unable to establish an exemption from registration under the Securities Act, and we are under no obligation to file a registration statement with respect to these rights or underlying securities or to endeavor to have a registration statement declared effective. Accordingly, holders of ADSs may be unable to participate in our rights offerings and may experience dilution of their holdings as a result.

Our proposed dual-class voting structure will limit your ability to influence corporate matters, and could discourage others from pursuing any change of control transactions that holders of our Class A ordinary shares and the ADSs may view as beneficial.

Our ordinary shares will be divided into Class A ordinary shares and Class B ordinary shares immediately prior to the completion of this offering. Holders of Class A ordinary shares will be entitled to one vote per share, while holders of Class B ordinary shares will be entitled to ten votes per share. We will issue Class A ordinary shares represented by the ADSs in this offering. All of our outstanding ordinary shares and preferred shares as of the date of this prospectus will be automatically re-designated or converted into Class B ordinary shares immediately prior to the completion of this offering. We intend to maintain the dual-class voting structure after the completion of this offering. Each Class B ordinary share is convertible into one Class A ordinary share at any time by the holder thereof. Class A ordinary shares are not convertible into Class B ordinary shares under any circumstances. Upon any transfer of Class B ordinary shares by a holder thereof to any person or entity which is not an affiliate of such holder, such Class B ordinary shares shall be automatically and immediately converted into the equal number of Class A ordinary shares.

Due to the disparate voting powers attached to these two classes of ordinary shares, our existing shareholders will collectively own approximately 98.8% of the voting power of our outstanding shares immediately after this offering and will have considerable influence over matters requiring shareholders’ approval, including election of directors and significant corporate transactions, such as a merger or sale of our company or our assets. In particular, our parent company Kingsoft Corporation, and FaX Vision Corporation, a company jointly owned by Mr. Sheng Fu and Mr. Ming Xu, our founders and core management, will beneficially own approximately 48.5% and 11.9% of our total outstanding shares, respectively, representing 53.5% and 13.3% of our total voting power immediately after this offering, respectively. This concentrated control will limit your ability to influence corporate matters and could discourage others from pursuing any potential merger, takeover or other change of control transactions that holders of Class A ordinary shares and ADSs may view as beneficial.

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You may be subject to limitations on transfer of your ADSs.

Your ADSs are transferable on the books of the depositary. However, the depositary may close its books at any time or from time to time when it deems expedient in connection with the performance of its duties. The depositary may close its books from time to time for a number of reasons, including in connection with corporate events such as a rights offering, during which time the depositary needs to maintain an exact number of ADSs on its books for a specified period. The depositary may also close its books in emergencies, and on weekends and public holidays. The depositary may refuse to deliver, transfer or register transfers of ADSs generally when our share register or the books of the depositary are closed, or at any time if we or the depositary thinks that it is advisable to do so because of any requirement of law or of any government or governmental body, or under any provision of the deposit agreement, or for any other reason in accordance with the terms of the deposit agreement. As a result, you may be unable to transfer your ADSs when you wish to.

We will incur increased costs as a result of being a public company, particularly after we cease to qualify as an “emerging growth company.”

Upon completion of this offering, we will become a public company and expect to incur significant legal, accounting and other expenses that we did not incur as a private company. The Sarbanes-Oxley Act of 2002, as well as rules subsequently implemented by the Securities and Exchange Commission, or the SEC, and NYSE, impose various requirements on the corporate governance practices of public companies. As a company with less than US$1.0 billion in revenues for our last fiscal year, we qualify as an “emerging growth company” pursuant to the JOBS Act. An emerging growth company may take advantage of specified reduced reporting and other requirements that are otherwise applicable generally to public companies. These provisions include exemption from the auditor attestation requirement under Section 404 of the Sarbanes-Oxley Act of 2002, or Section 404, in the assessment of the emerging growth company’s internal control over financial reporting and permission to delay adopting new or revised accounting standards until such time as those standards apply to private companies. However, we have elected to “opt out” of this provision and, as a result, we will comply with new or revised accounting standards as required when they are adopted for public companies. This decision to opt out of the extended transition period under the JOBS Act is irrevocable.

We expect these rules and regulations to increase our legal and financial compliance costs and to make some corporate activities more time-consuming and costly. After we are no longer an “emerging growth company,” we expect to incur significant expenses and devote substantial management effort toward ensuring compliance with the requirements of Section 404 of the Sarbanes-Oxley Act of 2002 and the other rules and regulations of the SEC. For example, as a result of becoming a public company, we will need to increase the number of independent directors and adopt policies regarding internal controls and disclosure controls and procedures. We also expect that operating as a public company will make it more difficult and more expensive for us to obtain director and officer liability insurance, and we may be required to accept reduced policy limits and coverage or incur substantially higher costs to obtain the same or similar coverage. In addition, we will incur additional costs associated with our public company reporting requirements. It may also be more difficult for us to find qualified persons to serve on our board of directors or as executive officers. We are currently evaluating and monitoring developments with respect to these rules and regulations, and we cannot predict or estimate with any degree of certainty the amount of additional costs we may incur or the timing of such costs.

In the past, shareholders of a public company often brought securities class action suits against the company following periods of instability in the market price of that company’s securities. If we were involved in a class action suit, it could divert a significant amount of our management’s attention and other resources from our business and operations, which could harm our results of operations and require us to incur significant expenses to defend the suit. Any such class action suit, whether or not successful, could harm our reputation and restrict our ability to raise capital in the future. In addition, if a claim is successfully made against us, we may be required to pay significant damages, which could have a material adverse effect on our financial condition and results of operations.

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There can be no assurance that we will not be passive foreign investment company, or PFIC, for United States federal income tax purposes for any taxable year, which could subject United States investors in the ADSs or our Class A ordinary shares to significant adverse United States income tax consequences.

We will be a “passive foreign investment company,” or “PFIC,” if, in the case of any particular taxable year, either (a) 75% or more of our gross income for such year consists of certain types of “passive” income or (b) 50% or more of the average quarterly value of our assets (as determined on the basis of fair market value) during such year produce or are held for the production of passive income (the “asset test”). Although the law in this regard is unclear, we treat our VIEs as being owned by us for United States federal income tax purposes, not only because we exercise effective control over the operation of such entities but also because we are entitled to substantially all of their economic benefits, and, as a result, we consolidate their results of operations in our consolidated financial statements. Assuming that we are the owner of our VIEs for United States federal income tax purposes, and based upon our current and expected income and assets (taking into account the expected proceeds from this offering) and projections as to the value of the ADSs and our Class A ordinary shares following the offering, we do not presently expect to be a PFIC for the current taxable year or the foreseeable future.

While we do not expect to become a PFIC, because the value of our assets for purposes of the asset test may be determined by reference to the market price of the ADSs or our Class A ordinary shares, fluctuations in the market price of the ADSs or our Class A ordinary shares may cause us to become a PFIC for the current or subsequent taxable years. The determination of whether we will be or become a PFIC will also depend, in part, on the composition of our income and assets, which may be affected by how, and how quickly, we use our liquid assets and the cash raised in this offering. Under circumstances where we determine not to deploy significant amounts of cash for active purposes or if we were treated as not owning our VIEs for United States federal income tax purposes, our risk of being a PFIC may substantially increase. Because there are uncertainties in the application of the relevant rules and PFIC status is a factual determination made annually after the close of each taxable year, there can be no assurance that we will not be a PFIC for the current taxable year or any future taxable year.

If we are a PFIC in any taxable year, a U.S. holder (as defined in “Taxation—United States Federal Income Tax Considerations”) may incur significantly increased United States income tax on gain recognized on the sale or other disposition of the ADSs or Class A ordinary shares and on the receipt of distributions on the ADSs or Class A ordinary shares to the extent such gain or distribution is treated as an “excess distribution” under the United States federal income tax rules and such holders may be subject to burdensome reporting requirements. Further, if we are a PFIC for any year during which a U.S. holder holds the ADSs or our Class A ordinary shares, we generally will continue to be treated as a PFIC for all succeeding years during which such U.S. holder holds the ADSs or our Class A ordinary shares. For more information see “Taxation—United States Federal Income Tax Considerations—Passive Foreign Investment Company Considerations.”

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