I do think it would be extremely funny if, for whatever reason;
1) Jiang Cheng came to be under the impression that Lan Sizhui is Wei Wuxian's son by birth/blood,
2) did the math, realised Lan Sizhui must have been conceived during or shortly before the Sunshot Campaign,
3) and IMMEDIATELY flew to the Cloud Recesses to scream, "WHO WERE YOU FUCKING BACK THEN?? WHO WERE YOU FUCKING!?"
Bonus points if Wei Wuxian just escalates it like, "Lan Zhan knocked me up when we were trapped in that cave actually :3" and for a whole second Jiang Cheng actually believes that he pulled some clown fish shit just to get his back blown out in a life or death situation before Wei Wuxian bursts into laughter














