Both are bl
Both and chinese
Both are about friendship
Both they fight for what is right for them

Friendship that trying to seek justice and to help others li liahuan is like same to wei wu Xian because both of them did go truth a lot and a difficult time and for how both wang yibo and xiao zhan was investigate i can say that to find the truth of who is behind of everything becuase wei yi was not believe that he is the one that kill those people i mean that was true i was not the one so i can say that even cheng yi and jeng fang and wang yibo and xiao zhan the investigates was difference but still investigating.