We rarely ask this proposition in our hearts, because we are too far away from ourselves. We can clearly see many physical attributes at a glance, but we can’t see clearly about ourselves. The efficiency of many things in the world comes from its science, which means to do it in an accurate way to cater to physical properties. This is the highest efficiency. Do not go against it and use human imagination to judge and deal with it. Imposing it on others, are these fables told by Zhuangzi really far away from us? Are we really just hearing stories? There are many stories that may be very close to us. I once saw a story about a little eagle. It grew up with a flock of chickens. The owner put it into the flock of chickens and raised it together since childhood. It always thought that it was an eagle. Chicken, so when the owner really wants to release the eagle, no matter how hard he beats it, scolds it, gives it food, or seduce it, it will think that it is a chicken and cannot fly. In the end, the owner was too disappointed. He said: I have raised a young eagle in vain. It is of no use at all. I will throw it away. He brought the eagle to the edge of the cliff, let go like a chicken, and fell vertically to the bottom of the cliff. (Repeat the above, omitted) In the process of falling, the eagle flapped its wings, and suddenly flew up before falling to the ground. Why is this? It's because in a high-altitude drop like a cliff fall, its nature is restored, because it knows that its wings are useful. In the past, when you raised it, you always fed it with the chickens. If you haven’t used its wings, in fact, how many of us must have some potential that has never been developed in the process of growing up (Yu Danxin). That is to say, you have never encountered a profession that you really love, which allows you to do it with your heart instead of using your brain to make a living. You have not gained the pleasure of being stimulated in this profession, and you have not enjoyed the happiness of being promoted. Therefore, some skills will always be obscured.