This mission marks the completion of the Chinese space station Tiangong and the start of its permanent habitation, since all three modules are now in place and

This mission marks the completion of the Chinese space station Tiangong and the start of its permanent habitation, since all three modules are now in place and it will be the first time they do an in-orbit crew exchange. Politics aside, it's quite a remarkable achievement, as to date every single mission they've launched, crewed or uncrewed, has been successful. (Yes, really. China livestreams all their launches, and it's not like you can hide rockets going boom in these days of satellite imagery.) China has yet to announce their space station plans for 2023 and beyond, but the Xuntian space telescope that can dock and undock autonomously is under development, and they also plan to bring in astronauts from other countries.