Kind and peaceful, he's also a bit of a pushover. YanLi inherited his sweet, unassuming nature. Might have had a crush on his right-hand man's wife, WuXian's mother. Prefers WuXian over his own son Cheng, but don't we all?
"It was widely known that, although Wei WuXian’s surname was not Jiang, he was the leading disciple of the sect leader of the YunmengJiang Sect - Jiang FengMian, and also the son of his friend who had passed away. In fact, the sect leader regarded him as his own child."
Killed by Core-Melting Hand