The Soul Can Travel Through the Prehistoric Times.

The Tao can be Tao, but it is not Tao; the name can be named, but it is not named. Nothing is called the beginning of heaven and earth; Being is called the mother of all things. Therefore, if there is always nothing, I want to observe its wonderfulness; if there is always something, I want to observe its beauty. These two have the same origin but different names, and they are both called xuan. Mysterious and mysterious, the door to all mysteries.