Today, I participated in a large-scale event of the 22nd "China Science and Peace" International Peace Week and sent nutrition and health lectures to the people. I did not expect to receive an unprecedented welcome. I really expressed my expectations. The topics mentioned by the fellows are very suitable for everyone''s life. It is really worthy of our attention to how to allocate reasonable nutrition to the richness of food.

　　 There are many types of staple foods, and they contain different types and amounts of nutrients. For example, corn and flour have less lysine content, while sweet potatoes, potatoes, and soybeans have more lysine content; crude rice and standard flour contain more vitamin B1, vitamin B2, and niacin. The content is very small; tryptophan is lacking in corn, while tryptophan is more in millet and potatoes. Therefore, using only one kind of food as the staple food will cause the deficiency of other nutrients in the long run and affect the health of the body. So how to make staple food is reasonable and scientific?

　　(1) Mixing coarse and fine grains and mixing grain and beans. Chinese folks have long had a way of eating coarse and fine grains, such as two-sided buns (standard flour, corn noodles), hybrid noodles (standard flour, corn noodles, bean noodles, millet noodles), mung bean dried rice, red bean rice porridge and so on. The combination of coarse and fine grains, mixed food of grains and beans, not only increases the variety flavor, delicious and delicious, but also the physiological value (nutritional value) of protein has been improved. Some people think that coarse grains are not tasty, easy to digest, and poor in nutrition. In fact, some coarse grains have a higher protein value than fine grains. For example, corn has a biological value of 60, while millet has only 57 and white flour has only 52.

　　(2) Dry and thin match. For example: steamed buns, rolls, fritters, etc., can be matched with cornmeal porridge, corn stubble porridge, mung bean millet porridge, red bean porridge rice porridge; corn noodle nest head, corn noodle hair cake, can be matched with shredded noodle soup, rice porridge. Dry and thin mix can expand the range of coarse grain mix. In addition, the food can have a certain volume.