Jack Ma (R), chairman of Alibaba Group, arrives at the Great Hall of the People for a business event, in Beijing, June 11, 2014. Alibaba Group Holding Ltd will fully acquire mobile browser firm UCWeb in the biggest merger in Chinese internet history, upping the stakes in its battle with arch-rivals Tencent and Baidu. REUTERS/Jason Lee (CHINA - Tags: BUSINESS SCIENCE TECHNOLOGY TELECOMS)