Content: This is an article about the way of keeping in good health. "Health Master" is the key to health. Zhuangzi believes that the key to keeping in good health is to conform to nature, forget emotions and not be trapped by foreign objects. The full text is divided into three parts, the first part is "all the years that can be done", which is the general outline of the whole article. It is pointed out that the most important thing for keeping in good health is to follow the imaginary way of things and conform to the change and development of nature. The second part is about how to keep in good health. The kitchen worker's decomposition of the cow body is a metaphor for human health care, which shows that life and life should be "natural" and "natural". Only by occupying the virtual "space" can we be "comfortable" and avoid it. The rest is the third part, which further explains the attitude of "obeying fate, conforming to nature and being safe and smooth".

Theme: first, freedom without support, and second, opposition to letting nature take its course. Although this article talks about health preservation between the lines, it actually reflects the author's philosophy and life purport.