Hes in love with Yuan Mu about a decade but couldnt confess to him out of the fear of being hated thus not being able to see him again. Even though Yuan Mu was already hating him so much. That being said after Yuan Mu dies he feels a deep regret. Later on fate plays its tricks he becomes sugar daddy of Cheng Jiamu reason being his looks thats similar to Yuan Mu. Some time later original Jiamu dies and Mu reincarnates in this body. Learning from his regret hes determined to make Yuan Mu his this time.