Porridge, noodles, milk, soy milk, rotten rice, etc. are the main ones, because these foods are nutritious and easy to digest and absorb. The following are some foods rich in main nutrients. Foods rich in protein: eggs, rice, lean meat, poultry, fish, shellfish, dairy, soybeans and their products, cereals, corn, sorghum, millet, sesame, sweet potato, potato, taro, and leafy vegetables. Fat-rich foods: animal fats, fats, egg yolks, milk and butterfat, vegetable oils, soybeans, peanuts, sesame seeds, sunflower seeds, etc. Foods rich in inorganic salts (i.e. calcium, iron, and iodine): shrimps, dried shrimps, kelp, soy products, cabbage, green vegetables, potatoes, meat bones, dairy offal, eggs, beans, water celery, mustard greens, and nostoc , jellyfish, shellfish, kelp, seaweed. Foods rich in vitamin A: liver, eggs, milk, eels, eels, clams, and oysters. Foods rich in carotene: carrots, sweet potatoes, spinach, alfalfa, shepherd's purse, and pea sprouts. Foods rich in vitamin B1: cereals, rice, flour, soybeans, peanuts, lean meat, liver, and yeast. Foods rich in vitamin B2: animal offal, eggs, dairy, beans, green leafy vegetables. Foods rich in vitamin PP: cereals, peanuts, yeast, meat, and animal offal. Foods rich in vitamin C: fresh green vegetables, peppers, bean sprouts, oranges, jujubes, and hawthorns. Thank you for your acceptance