Chinese Premier Wen Jiabao (1st R) and He Guoqiang (2nd R), head of the Communist Party of China (CPC) Central Commission for Discipline Inspection, greet the staff after the successful launch of Tiangong-1 space lab module at Jiuquan Satellite Launch Center in northwest China's Gansu Province, Sept. 29, 2011. [Xinhua/Yao Dawei]