The wind and weather are dry, the stock loses money, the husband and wife are not easy to “on fire”. The term “fire” is a folk saying, also known as “heat”, can be explained from the theory of Chinese medicine, belongs to the category of heat evidence in Chinese medicine. What is “on fire”? Fire is divided into real fire and deficiency fire. Clinical manifestations of real fire: red face and red eyes, dry lips, bitter and thirsty mouth, crusty tongue, sore throat, bleeding gums, bleeding epistaxis, tinnitus and deafness, boils and sores at first, body heat and irritability, constipation, blood in urine and stool, red tongue with yellow coating and counted pulse. Clinical manifestations of deficiency fire: Mostly due to internal injuries and strain, it can be further divided into two types: yin deficiency fire and qi deficiency fire. Yin deficiency fire mostly manifests as hot flashes and night sweats, emaciation, dry mouth and throat, irritability of the heart, restlessness, red tongue without moss, and fine pulse. The common symptoms of Qi deficiency fire are generalized low-grade fever, which is worse before noon, fear of cold, fear of wind, fear of heat and cold, tiredness and weakness, shortness of breath and lazy speech, sweating, loose urine and stool, large and weak pulse, and thin tongue with light coating. How does Western medicine explain “fire”? Western medicine uses the term “allergy and inflammation” to explain. To explain the “fire” in Chinese medicine, certain factors in the climate and diet stimulate the human body, and the body produces inflammatory reactions and various “fire” symptoms appear. “This can be explained by the fact that many people are allergic to certain proteins in dog meat or mangoes, which can easily cause dry and itchy eyes, sore throat and cough. The nose and throat mucosa produces sterile inflammation, people will feel dry mouth, sore throat …… this time if the secondary bacterial or viral infection, herpes, gingivitis and other bacterial inflammation also followed. In fact, all the symptoms of “fire” can be summarized by inflammation.