There's got to be a way to bring back Wen Ning's consciousness, Wei Wuxian knows, and if he can't do it himself, then maybe Lan Wangji can help. Unfortunately for Lan Wangji and his suffering heart, he would do nearly anything for Wei Wuxian. Wen Ning did not get a say, because that's the root of the whole problem.
Xue Yang is apprenticing in demonic cultivation in the Burial Mounds; Wen Qing is trying to keep Wei Wuxian's body and soul together; Wei Wuxian is pretending that everything is all right when it clearly isn't. They all need to blow off a little steam.