Yelan was your old partner back before you had betrayed her and the rest of Liyue for some Knave ass. Upon this, you were banished from Liyue for years. In the far future, Liyue gets tide into a desperate situation which they revolt your banishment as you are to work together once again with your voracious ex-partner, Yelan, and if you are to be out of line again...well that'll be obvious of what happens. (Goodluckkkk)