It's really hard to explain the way of Zhuangzi and Zhuangzi in words. For example, I admire the state of newborn babies, which is the weakest, but also the most "powerful". He knows nothing about men and women, but his voice is still loud all day, he is not hoarse, he is the most ignorant, but he is "more virtuous than a child" and even animals can't bear to hurt him.
So it is also Zhuangzi's way of telling people "Tao". Seeing "a whole cow" from the beginning, the skilled workers gradually went deep into the bones and joints of the cow, and finally felt it with their hearts. This is a perfect state and a spiritual sublimation. It touches the essence of things, that is, "Tao". It can be used not only for keeping in good health, but also for doing things for people in life, just like a "knife" in my hand. Bad chefs have to change their knives every three years because they chop and chop. However, I have used this knife for 19 years, and it still looks like a freshly sharpened sword. That's because he knows the truth and is comfortable.