YY Inc., through its subsidiaries, operates an online social platform in the People's Republic of China. It engages users in real-time online group activities through voice, video, and text on personal computers and mobile devices; and enables users to create and organize groups of various sizes to discover and participate in a range of online activities, including music shows, online games, dating shows, live games broadcasting, and e-learning. The company's core product is YY Client, which enables users to engage in live interactions online; and provides access to user-created online social activities groups. It also offers Web-based YY that enables users to conduct real-time interactions on the Web browsers without any downloads or installations; and Mobile YY, a mobile application that provides users access to the company's music and entertainment content. In addition, the company owns and operates Duowan.com, a game media Website that provides access to and interactive resources for online games; Edu24oL.com, an online vocational training and language training platform; and YY.com, Huya.com, and Zhiniu8.com to browse and watch various categories of live broadcasts and other contents on the YY platform. Further, it operates an education platform 100.com, which provides various online English courses specializing in the preparation of International English Language Testing System (IELTS); and DuBooker that publishes various teaching materials relevant to language education. YY Inc. was founded in 2005 and is headquartered in Guangzhou, the People's Republic of China.