On April 17, 2026, astronauts from the Shenzhou-21 mission conducted an extravehicular activity outside the Tiangong space station. This significant operation involved the installation of debris-protection hardware.
In addition to the installation work, the astronauts performed an inspection of the Tiangong space station, contributing to its ongoing safety and operational readiness.
As a result of these activities, the duration of the Shenzhou-21 mission has been extended by one month, allowing the crew to continue their important work in orbit.