porridge, noodles, milk, soybean milk and rotten rice are the main foods, because these foods are nutritious and easy to digest and absorb; Here are some main foods rich in nutrients. Rich foods in protein: egg rice, lean meat, poultry, fish, shellfish, milk, soybeans and their products, cereals, corn, sorghum, millet, sesame, sweet potato, potato, taro and leafy vegetables. Foods rich in fat: animal fat, fat, egg yolk, milk and milk fat, vegetable oil, soybeans, peanuts, sesame seeds, sunflower seeds, etc. Foods rich in inorganic salts (i.e. calcium, iron and iodine): shrimp, shrimp skin, kelp, bean products, Chinese cabbage, green vegetables, potatoes, meat bones, internal organs of mammals, eggs, beans, celery, mustard, Nostoc flagelliforme, jellyfish, shellfish, kelp and laver. Foods rich in vitamin A: liver, eggs, milk, eel, eel, oyster. Foods rich in carotene: carrots, sweet potatoes, spinach, alfalfa, shepherd's purse and pea seedlings. Foods rich in vitamin B1: cereals, glutinous rice, flour, soybeans, peanuts, lean meat, liver and yeast. Foods rich in vitamin B2: animal viscera, eggs, milk, beans and green leafy vegetables. Foods rich in vitamin PP: cereals, peanuts, yeast, meat and animal offal. Foods rich in vitamin C: fresh green vegetables, pepper, bean sprouts, oranges, jujube and hawthorn.