Do y'all ever think about Wei Wuxian's relationships and the places that foster them?
After Wei Wuxian's brief stay there, the Cloud Recesses are burnt down by the Wens. The place is destroyed completely, but it's built back up exactly the same as it was before. Resurrected Wei Wuxian can still recognize and navigate it by memory from when he was a teenager before all the destruction.
On the other hand, Lotus Pier, the place where Wei Wuxian spent the better part of a decade growing up, is almost unrecognizable to him when he returns post-resurrection. After Lotus Pier was sacked and massacred, after the twin prides fell apart in the war's aftermath, Jiang Cheng rebuilt the place grander and utterly different than it was before. The buildings Wwx remembers, including his old rooms, are gone.
I think that works quite well as a stand in for certain aspects of Lan Wangji and Jiang Cheng's relationships with Wei Wuxian. Lan Zhan becomes Wei Wuxian's support, always solid and the same as he's ever been, and Jiang Cheng tries to remake himself into someone utterly apart from his old martial brother and the relationship they had.