The tradition of Taoism has been around for a long time. The ancestor of the Hunyuan Dynasty at the beginning of the Taishang Dynasty used the wonderfulness of Xiangxian to name it Tao, and established words to support it with virtue, and five thousand words were written in it. However, the purpose behind the words is so subtle and profound that it cannot be expressed in words. It is so deep that it cannot be understood, so it is difficult to describe it. From the time when Yin Zi received the moral education, each of his ten disciples obtained his own secrets, such as Lie and Zhuang, and finally An Qisheng, Li Xianqing, and Ge Xianweng all taught and received their own classics.