It began in the pre-Qin period and was a way of keeping in good health for ancient nobles. Now it is rising because most people are overnourished, and they can adjust their intestines and stomach by avoiding eating whole grains. What can you call it if you drink and eat? Can you still get the desired results?
If it is also called pigu, it can only be called half pigu at most, and the effect is not obvious at all.