The9 Ltd (NASDAQ: NCTY), a Shanghai-based online game operator, will import OpenFeint to China to explore the nation's mobile gaming market, vice president Shen Dingguo said Monday. OpenFeint is a US social platform and application for iOS and Android. The9 invested in a minority stake in OpenFeint in July, and Intel has also invested $3 million in it recently. Mobile gaming is considered to be The9's new cash cow after it lost to NetEase.com Inc (NASDAQ: NTES) its 3-year exclusive license to operate Blizzard's World of Warcraft in China 18 months ago.