The Mengtian lab module docks with China's Tiangong space station combination. [Photo/Xinhua]

China completed the transposition of its Mengtian lab module at 9:32 am on Thursday, according to the China Manned Space Agency.

Mengtian, Tiangong's second lab module, docked with the front port of Tianhe, the space station's core module, at 4:27 am Tuesday (Beijing Time) after it entered the planned orbit, the CMSA said. The whole process of rendezvous and docking took approximately 13 hours.