The origin of this sentence is quite interesting. Dongpo meat, a traditional famous dish, is said to have been created by Su Shi, a poet in the Northern Song Dynasty. The meat is fat but not greasy and delicious. In fact, although Su Shi loves to eat, he doesn't eat much and his daily life is very simple. He once wrote in The Book with Li Gongze: If you want to eat, you will be poor. Every frugality is also the way to cherish happiness and prolong life. He believes that the desire for food can never be satisfied, and frugality every day is also a good way to cherish happiness and prolong life.

Su Shi's explanation of trying to control the mouth and stomach;

It has both the practical value of health preservation and Zen. It's a pity to eat less and not be greedy. As the saying goes, it is easier said than done. The reason is not difficult to understand, but it is not easy to practice. It's delicious at present, and it's hard to resist the temptation. Many people only care about the enjoyment of their mouths and ignore the consequences. If everything goes too far, moderation is the best policy. For food, for many choices in life, everything is fine.