There is a ferocious beast in the world called Taotie, with the body of a sheep, its eyes hidden under its armpits, tiger teeth and human claws, and a natural craving for food. There is a bird in the west named Bifang. It is shaped like a crane, has one leg, red stripes and a white beak. It feeds on fire. However, the sky has a bad look, and the beasts of all time are running to avoid disaster, which is considered the beginning of "fog".