In his original world, Master Jiao had no chance of ever touching the true nature of the world. Then, after a screw came loose in his head, he inhaled a large amount of chlorine gas and met an untimely end (entering the cycle of reincarnation).
In the Hall of the King of Hell
"Go and take out Scaramouche for me. Why? I just can't stand him. What bad intentions could an old man like me possibly have?"
Master Jiao thought to himself, "Yeah, right, you old bastard. How could this old geezer possibly want to kill Scaramouche for no other reason?"
Though Master Jiao put up a strong protest on the outside, his heart was perfectly sincere.
Once he entered Teyvat, he would tear apart the OP, make friends with the trolls, and cut down Scaramouche. He would become the glue turd moving between the Great Ming Dynasty and the Great Yuan Dynasty, binding the two together to fight the mysterious power beyond the heart of the sky...