Half-summer is a medicinal plant, it is mainly picked around the summer solstice, so it is called half-summer. Now there are cultivated and wild, its main function is to dry dampness and phlegm, descending reversal to stop vomiting, eliminating lumps and dispersing knots, generally used for phlegm coughing and wheezing, phlegm drink palpitations, wind and phlegm dizziness, phlegm syncope and headache, vomiting and regurgitation, chest and epigastric plagued, plum nucleus gas. When used raw, it can treat carbuncles. In the respiratory system, it has the effect of suppressing cough and expectorant; in the digestive system, it has the effect of antiemetic, emetic and anti-ulcer; in the hepatobiliary system, it can promote the secretion of bile; for the circulatory system, it has the effect of anti-arrhythmia and anticoagulation. In recent years, it has been found to treat tumors, and it is applicable to esophageal cancer, stomach cancer and lymphoma. According to its different concoctions, it can be categorized into raw hemixia, clear hemixia, ginger hemixia and French hemixia. Its efficacy is slightly different: Sheng half-summer subdues swelling and disperses knots, Qing half-summer dries dampness and resolves phlegm, Jiang half-summer lowers the rebelliousness and stops vomiting, and Fa half-summer harmonizes the stomach and dries dampness. You can choose a reasonable application according to the different functions.