Five thousand years ago, Chi You led the demon clan to cause harm to the world. In order to deal with Chi You, the Yellow Emperor organized an elite army and personally led the army to fight against Chi You, but they still failed to resist. Fortunately, with the help of the four sacred beasts of Qinglong, White Tiger, Suzaku, and Xuanwu who guarded the Fourth Palace, this evil force was suppressed. From then on, Chi You was suppressed by the four sacred beasts in the middle of our four clans, and was guarded by Yinglong. However, Chi You would gather his magic power every five hundred years and try to break through the seal. When these five hundred years came, it was also the most turbulent period for the demons. In order to maintain peace in the world, the four great beasts left all their souls in the world and reincarnated every five hundred years to protect the four tribes and suppress Chi You.
