in the xuan hai tian cultivation world, where powerful sects stand tall, modern day yang rui accidentally becomes the dean of the divine lang huan library. yang rui sets out to recruit new disciples and do something remarkable. can yang rui glorify the name of the lang huan library?
But why would the demon lord summon him? Yeah bcz demon lord was bored wants to fight against a new toy or he was fed up of his immortality and wants to die now.