Chinese astronauts from the Shenzhou 20 mission conducted a 6.5-hour spacewalk on Aug. 15 to add debris shielding and maintain equipment on the Tiangong space station.

Taikonauts Chen Dong and Wang Jie carried out the extravehicular activities, assisted by Chen Zhongrui inside.

This was Dong’s sixth spacewalk, the most by any Chinese astronaut.

The crew, more than halfway through their six-month stay, has also conducted experiments and overseen cargo spacecraft arrivals and departures, Space.com has reported.

Tiangong, about 20% the size of the ISS, has been operational since October 2022, with future expansion possible.