[he is so tired and hurt himself, and he has no body of his own that he can command to at least fix what's wrong. it's like being a ghost all over again, with the added merciless aspect of eyes on him through all of it and no defense against them. Lan Wangji feels him trying to fold in over his own emotions, like a Xuanwu curling into its shell, to try and make some more distance, futilely]