The difference between humans and monsters lies in cognition. The souls of all demons and the aura of heaven and earth are gathered together to form a demon core. What emerges from the core is Qi Ye, the big boss who leads the entire demon world. Qi Ye refines the demon core with his own demon blood and regenerates the demon core. The demon core is broken once every five hundred years, and the demon that emerges from the core is difficult to kill. Qi Ye's youngest daughter Jiang Ruyuan met Shen Lian, the master of Fusheng Peak, during several human-monster battles. They fell in love, but the human-monsters took different paths and fell in love and killed each other in disguise.
Concept: Prejudice is a parasite, greed is a devil