2. Chinese cabbage is one of the vegetables with the most abundant vitamins and minerals, which provides material conditions for ensuring the physiological needs of the body and helps to enhance the immune ability of the body; Chinese cabbage contains more carotene than beans, tomatoes and melons, and is rich in vitamin C. After entering the human body, it can promote skin cell metabolism, prevent skin roughness and pigmentation, make skin smooth and delay aging.
3. Potato has a high nutritional value in protein. Among all food crops, potato has the most complete vitamin content, which is equivalent to 2 times of carrots, 3 times of Chinese cabbage, 4 times of tomatoes and 4 times of B vitamins. In particular, potatoes contain carotene and vitamin C, which are not found in cereals. The vitamin C content of potato is 10 times that of apple, and it is heat-resistant. Some nutritionists have done experiments: 0.25 Jin of fresh potatoes is enough for a person to consume the vitamins he needs day and night.