There are yam, lotus root, jujube, medlar and so on. Yam contains amylase, polyphenol oxidase and other components, which can improve the digestion and absorption function of the spleen and stomach, and has a dietotherapy effect on diseases such as weakness of the spleen and stomach, anorexia, fatigue and diarrhea. Lotus root also has a certain effect on regulating the stomach. Lotus root can relieve constipation and diarrhea, strengthen the spleen and stimulate appetite. Jujube is warm and sweet, and it can nourish the middle energizer, nourish blood and soothe the nerves. Lycium barbarum is sweet in taste, flat in nature, nourishing liver and kidney, improving eyesight and eliminating fatigue.