Astronauts on the Shenzhou X mission replaced the interior cladding of the Tiangong-1 space module on Friday, completing their first maintenance job in space.

Commander Nie Haisheng, astronaut Zhang Xiaoguang, and Wang Yaping, the second Chinese woman in space, removed the soft floor inside the 10-meter-long space module, and installed new cladding.

A news release from the manned space program did not detail the total area of the floor involved.