The four great beasts in ancient China are the incarnations of the four "big villains", namely, Three Miao, Fighting, Gonggong and Gun. They were all killed for resisting the authorities, and their spirits remained immortal after death. They are called "evil spirits" by the authorities, that is, the four great Warcraft, which correspond to Tao Tie respectively. Four great beasts, namely, four great beasts: Black Dragon (Qinglong), White Tiger, Suzaku and Xuanwu Celestial Spirit. Qinglong and Baihu palm square, Suzaku Xuanwu shun Yin and Yang, Qinglong is the God of the East; White tiger is the god of the west; Suzaku is the god of the south; Xuanwu is the god of the north. Therefore, there is a "three auxiliary maps" saying: "Qinglong, White Tiger, Suzaku, Xuanwu, Tiansi Spirit, taking the square as the square, the king makes the palace pavilion and takes the method."