Wei Wuxian starts to scoot around Lan wangji's feet, circling them with his little tail wagging back and forth as he moves. Then he moves to the door frame and manages to figure out how to climb up it until he is eye level with the other man.

"I can climb too!" It's like he has sticky things on his feet to grip with. It's actually pretty easy to get used to this body besides the face he is running around on all fours.