Source: from "Master of Health" "Those who have a festival have a room, and the blade is not thick; Without thickness, there is room for recovery, so 19 years, the blade is still new. "
There are gaps between the joints of cattle, but the blade is so thin that there is no thickness. By cutting into seams without thickness, there is still a lot of room to lift the blade from a wide place. So this knife has been used for 19 years, and it seems to have just been ground from the grindstone.
Appreciation of Master of Health:
The first part is the general outline of the whole article, pointing out that the most important thing in keeping in good health is to adhere to the virtual Tao in things and adapt to the changes and development of nature; The second part uses the story of knowing how to treat cows as a metaphor for people's health preservation, which shows that people should follow the laws of things in their lives and avoid the entanglement of right and wrong and contradictions.
The third part shows that the sage's attitude towards life, which keeps pace with the times instead of sticking to things, is to do his best, even doomed, and embodies the author's philosophical thought and life purport. The article describes vivid images and details, and the story contains reasoning, which is interesting and enlightening.
The above contents refer to:
Baidu encyclopedia-health advocate