Jiang Cheng and Nie Huaisan have put on weight, much to Lan Qiren's dismay. So have several members of the Lan clan. Lan Qiren sends Lan Wangji to investigate. Wei Wuxian is scarfing down rice, but still skinny. He's also killing chickens outside Cloud Recesses and climbing over doors. Turns out he wrote a book: How to Survive in Cloud Recesses with all his rule-avoiding tips.