Including: fresh and canned vegetables (excluding additives such as seasoning, fat and sugar); Tomato sauce.

Explanation: vegetables can't be matched with non-core foods (such as fried beans, oil-soaked vegetables, and sugar-stained vegetables are not core foods); Vegetable juice is not the core food.

2. Fruit

Including: fresh and canned (sugar-free) fruits.

Note: if it is canned, it must be soaked in water or pure juice (not sugar water), and the soaked juice is inedible; Dried fruits (dried apricots, peaches, bananas, etc. ) are not core foods; Fruit juice is not the core food.

Step 3: soup

Including: fresh, frozen and canned (without additives such as seasoning, fat and sugar) clear soup.

Note: Western-style cream soup and concentrated broth are not core foods.

4. Skim dairy products and other milk substitutes

Include skim milk, skim cheese and skim sugar-free yogurt; Soymilk, bean curd and bean food without additives.

Description: All the related foods made from the above raw materials, including milkshake and hot chocolate, must be sugar-free and low-calorie, and can be eaten once a day.

5. Eggs and their substitutes

Including whole eggs, protein and their artificial substitutes.

Note: All kinds of egg food provide high-quality protein, but be careful not to fry it.

6. Staple food (grain)

Including whole grains, miscellaneous grains, rice and potatoes; Starch beans.

Note: Cookies, instant noodles, cakes and fried staple foods are not included.