Studies have shown that whole grains can nourish the five internal organs. As early as ancient times, there was a saying that "one grain supplements one dirty". Cereals include millet, rice, wheat, soybeans and sorghum. Among them, millet can tonify spleen, soybean can tonify kidney and so on. Chinese medicine believes that whole grains can not only fill the stomach, but also be good food for the five internal organs. The black beans in soybean kidney-tonifying soybean are called "kidney valley". Traditional Chinese medicine believes that it has the effects of tonifying kidney, strengthening body, detoxifying and moistening skin, and has a good therapeutic effect on kidney deficiency and edema. Practice: Beat soybean milk after soaking hair, or cook black bean porridge once in the morning and evening. Rice moistens the lungs. Rice covers rice, purple rice and so on. It has a good effect of nourishing yin and moistening lung when symptoms such as lung heat appear. Practice: Cook rice porridge with low fire until the rice soup is sticky. Drink rice soup instead of rice grains, and take it at any time. Millet replenishes the spleen. Millet is the first of all grains. Regular eating can replenish the spleen and benefit the stomach. Millet is the top tonic for people with spleen deficiency and infirmity, which can tonify the middle energizer and prolong life. Practice: Cook a pot of millet porridge, skim off the essence of the upper millet porridge with a spoon-rice oil, and drink it on an empty stomach, which has a good nourishing effect on the spleen and stomach and can be taken every morning and evening.