Ancient books record that when the floods were raging, Gun stole the emperor's soil to drown the floods without waiting for the emperor's orders. The emperor was furious and ordered Zhu Rong to kill Gun in Yujiao. Then he ordered Zhu Rong to refine the Xi soil fire for a thousand years, and finally refined it into the Sun Xi jade and the Moon soil jade, which were scattered in the world. Legend has it that the messenger who is born with a jade can freely travel between heaven and earth. When floods are rampant, he can open the door to the fantasy realm guarded by the fire phoenix and save all living beings from water and fire.