In ancient Li Shizhen, red beans were called "heart valley", which emphasized the nourishing function of red beans. Red beans can not only clear the heart, but also make up for hard work. It is rich in crude fiber, which is helpful to reduce blood fat, blood pressure and improve heart activity in clinic. At the same time, it is rich in iron, which can promote qi and replenish blood, and is very suitable for hard work.

Mung bean is the most common grain, that is, in hot summer, we will eat delicious summer-heat mung bean soup. Mung bean is a traditional bean food for our people.

Rice is one of the staple foods of human beings. According to modern nutritional analysis, rice contains protein, fat, vitamin B 1, A, E and many minerals. As far as varieties are concerned, rice can be divided into stem rice and glutinous rice.

Sweet potato is rich in essential nutrients such as starch, vitamins and cellulose, as well as mineral elements such as magnesium, phosphorus and calcium and linoleic acid. These substances can maintain the elasticity of blood vessels and are very effective in preventing and treating habitual constipation in the elderly. Unfortunately, most people think that eating sweet potatoes will make people fat and dare not eat them. In fact, on the contrary, sweet potato is an ideal diet food, its calorie is only 1/3 of that of rice, and because it is rich in cellulose and pectin, it has the special function of preventing sugar from transforming into fat.