I don't see this posted:
On Jan 6, the Chinese space station took 47 mins to complete a test of the robotic arm. During the test, the Tianzhou2 cargo ship was detached from the core section. The robotic arm then grabbed the cargo ship, moved it from the current dock position to another side, then moved it back to attach again.
This test verifies the load capability of the robotic arm, and the procedure of moving sections (or capsules? not sure how to translate "舱段") between dock positions:
1月6日凌晨,机械臂成功捕获天舟二号货运飞船。6时12分转位试验开始,天舟二号货运飞船与天和核心舱解锁分离后,在机械臂拖动下以核心舱节点舱球心为圆心进行平面转位;尔后,反向操作,直至货运飞船与核心舱重新对接并完成锁紧。
The embedded GIF animation demos the movement. But sadly the video sucks.