Xuan Yutian

"Tao Te Ching" says: "the valley God does not die, is called the mysterious female. The door of the mysterious female is called the root of heaven and earth. " Xuan means black, and the female is the genitalia of the cow, which means subtle incarnation. the name Xuan means that the mysterious female heaven is an outstanding human and Earth Spirit, and the Tao incarnates all things without seeing its origin. people of the mysterious female heaven have always been proud of it. until one day, Zhang Feng of the mysterious female heaven knew the place called Su female heaven