In hot summer, cool and heat-clearing melons should be used as the main material of home-cooked soup, but Guangdong families have a timely food system according to the different climates of the four seasons. Let's count the medicinal materials that can be used to make soup. Sweating more in summer, easy to fatigue, to replenish qi; But you can't use nourishing herbs, such as ginseng. Therefore, American ginseng (Panax quinquefolium) with the effect of clearing heat and benefiting qi is the most timely. With lean meat, snail head stew or soup, cool and nourishing yin, invigorating qi and refreshing, the soup is sweet and delicious. American ginseng is a common medicinal material for treating tea. Its taste is bitter and slightly sweet, and its nature is almost cold. In fact, it is a sweet and cool product. Promote fluid production to quench thirst, nourish lung and stomach. It is suitable for people with yin deficiency, blood heat, body fluid deficiency and polydipsia. If you have a fever, taking too many cold cooling and dispersing agents when you have a fever may lead to yin deficiency and damage of body fluid, thus generating latent heat. Every afternoon, your body has a slight fever and you are delirious for a long time. In order to get rid of this slight deficiency heat, American ginseng is often used to recuperate, so that deficiency heat can be removed, body fluid can be recovered, and mental and physical recovery can be faster. Adenophora adenophora and Polygonatum odoratum are commonly used in soup for clearing heat and nourishing yin. Adenophora adenophora and Polygonatum odoratum are two kinds of medicinal materials, which have long been used as diet therapy. Usually, "Qingbuliang" soup or sugar water is boiled, and Radix Adenophorae and Rhizoma Polygonati Odorati are added. It is considered that the nourishing effect is stronger and the moisturizing effect is better. Some people also use Korean ginseng and Radix Adenophorae to cook soup with lean pork. They think that this kind of "red and white ginseng soup" is tonic but not dry, and it is most suitable for people who are easy to get angry at ordinary times but need tonic. Polygonatum odoratum is used by many people to cook chicken soup. It is said that people with liver deficiency and less blood need chicken soup or chicken juice to replenish blood, but it is easy to cause liver fire. Therefore, choosing "Chicken Neck" and Polygonatum odoratum to make soup or stew soup can not only enrich blood but also regulate liver deficiency, and will not cause liver fire, because Polygonatum odoratum has the effect of moistening dryness and calming wind. Many families use Polygonatum odoratum and Radix Adenophorae to cook duck soup, which has obvious nourishing yin effect. As for Chinese yam (Hu Aishan), Gordon Euryale seed and lotus seed, they are the main functions of soup and dietotherapy regardless of seasons, which have the functions of invigorating spleen and tonifying deficiency. They are fragrant and delicious, and can be used as dietary supplements, accompanied by pigs, beef bones, chickens and ducks, seafood and so on. Children's spleen and kidney are often served with quail and old pigeon stew or soup. Cordyceps sinensis nourishes the lungs and kidneys. The expensive Cordyceps sinensis also has many guests. Many people use stewed duck with Cordyceps sinensis as slimming soup. Cordyceps sinensis has the functions of tonifying lung and kidney, relieving asthma and cough, tonifying deficiency and benefiting qi. It has special effects on asthenic asthma, cough, spontaneous sweating, night sweats, impotence, nocturnal emission, soreness of waist and knees, etc. Old duck, sweet and salty, has the function of nourishing yin and stomach, and is very effective for fatigue, bone steaming weakness, cough weakness, kidney deficiency and edema. Cantonese people also like to use Cordyceps sinensis with red meat (lean meat), donkey-hide gelatin and snail head (or fresh abalone) to stew soup, which can nourish yin and help yang.