Wu Ping, deputy director of China's manned space engineering office, speaks during a press conference about the Tiangong-2 space lab in Jiuquan, northwest China's Gansu Province, Sept. 14, 2016. China will launch the Tiangong-2 space lab from the Jiuquan Satellite Launch Center in northwestern China's Gobi Desert at 10:04 p.m. on Sept. 15. (Xinhua/Ju Zhenhua)