The poem of the young marshal Zhang Xueliang means that Tao can be said, but it is not the usual Tao. You can give a name, but it is not the usual name. It can be said that he is nothing, because he was before the creation of heaven and earth. It can also be said that he does, because he is the mother of all things. According to the investigation, the poem written by Zhang Xueliang, a young marshal, is the Tao Te Ching, which has both implications and advantages. The name can be named. It's very famous. The beginning of the unknown world. The famous mother of everything. So there is often nothing, and I want to see its wonders. Often, I want to see it. Both of them, with different names, are called metaphysics. Mysterious and mysterious, the gate of Wan Qi.