BEIJING -- China's Tianzhou-1 cargo spacecraft completed its second docking with Tiangong-2 space lab at 2:55 pm Monday, after flying around the space lab.

Tianzhou-1 separated from Tiangong-2 on Monday morning and then flew around the space lab, according to the China Manned Space Engineering Office.

Tianzhou-1, China's first cargo spacecraft, was launched on April 20 from South China's Hainan province, and it completed automated docking with the orbiting Tiangong-2 space lab on April 22.

The two spacecraft completed their first in-orbit refueling on April 27 and their second in-orbit refueling on June 15.