When the heaven and earth first opened, the earth divided the four directions, and the four beasts were ordered to protect them.
To the south is the dense forest, where the animal is the blue luan; to the north is the yellow sand, where the animal is the marten; to the east is the deep sea, where the animal is the shark; to the west is the ice field, where the animal is the gray wolf.
It's a fantasy world.
This article is for my own entertainment, I hope you can forgive me, in short, it is very vulgar.