It is forbidden to buy or use products that do not meet food safety standards, and it is also forbidden to produce and sell frozen foods, fresh foods and high-risk foods: wild mushrooms, sprouted potatoes, etc.

The canteen originated in the summer and autumn of 1958, and was called "public canteen" at that time, which was organized by the government. It was the time of political madness, and it was completely ineffective for farmers to pretend to be poor to fight against this madness, so setting up public canteens was just one of a series of romantic fanaticism.

People get steamed buns and eat in public canteens. At first, the canteen was very prosperous.