All magical powers are insignificant, and only emptiness is the avenue. What does this sentence mean? How to write an explanatory article?

Zheng Guo's witchcraft season is very salty, and he can predict people's life and death. It's very effective and famous. Liezi admired Ji Xian's prediction with his own eyes and said to his teacher Huzi, "I thought you were already a very powerful person, but I didn't expect Ji Xian to be more powerful than you." The pot said, "Well, how about you call Ji Xian and ask him to tell my fortune?" The next day, Liezi led Ji Xian to the pot and let him have a look at the teacher's physical condition. Ji Xian ran away after reading it, and Liezi chased him out and asked, "What happened to my teacher?" Ji Xian said in panic, "My God, your teacher is dying. He seems to be dying. Prepare for the funeral! " Liezi hurried back to the house and told the teacher the result of fortune telling. Nothing said with a smile: "I deliberately showed him the color of the earth, but my heart was silent." It seems that my life is gone, so he thinks I'm dying. This is exactly what I want. Tell him to come back tomorrow. "

The next day, Ji Xian came again, and it was no problem to see the pot. When he left, he said to his son, "Your teacher is very lucky. He has turned the corner." After Jixian left, the pot told Liezi, "I just showed him the life between heaven and earth, excluding other distractions such as fame and fortune, and life naturally spread from the heel to the whole body." Of course, he will think that I have turned the corner. Call him again tomorrow. "

On the third day, Ji Xian looked at the pot for a while and said to Liezi, "Your master is lost in thought. I can't read it today. Come back another day. " Afterwards, the pot told Liezi: "Today, I only show the balance of Yin and Yang. Of course, he can't see anything, so I'll call him tomorrow. "

On the fourth day, an invisible image appeared in the pot. Everything is salty with the seasons, so that Ji Xian can't see the trace. I don't know why the pot made people. So I had to run away.

Afterwards, Guo told Liezi that Ji Xian's physiognomy is really a master, and his technology is also very high, but it is only a small skill. Only when people master the Tao, that is, the law of the development of things, can any "small skill" be so much.