In the lost building in the world, the owner of the building, Zhuo Qing, was a human being who often wore red clothes and had an alluring appearance. In order to find a way to maintain his beauty and stay in his youth forever, he killed the girl and took her blood to bathe in it or drink it raw. After being exposed, everyone feared him and was besieged and killed. After his death, he became a demon. He still maintained his beautiful appearance and often wandered around the world.