JIUQUAN - China's second orbiting space lab Tiangong-2, which may enable two astronauts to live in space for as long as 30 days, has been delivered to the Jiuquan Satellite Launch Center.

The space lab was sent from Beijing on Thursday by railway and reached the launch center on Saturday, marking the start of implementing the missions of Tiangong-2 and Shenzhou-11 manned spacecraft, said a statement issued by China's manned space engineering office.

It will undergo assembling and testing processes at the center for the launch scheduled for mid-September, the statement said.