It seems Wei Yun doesn't like his father much... Thou him not being in his life I can see why, unless there is more to it. Hmm. 
“At best, you’re the untamed hero; at worst, you offend people wherever you go.” - Wei WuXian
― 墨香铜臭, 魔道祖师 [Mó Dào Zǔ Shī]
― 墨香铜臭, 魔道祖师 [Mó Dào Zǔ Shī]