Any external evil with hot and upward characteristics is called (fire) heat evil. Pathogenic characteristics: 1. Fiery heat is Yang evil, burning upward, easily consuming Qi and damaging body fluids. 2. Fire inflammation. "Fire means inflammation above", so the fiery evil has the characteristics of burning upward and easily invades the upper part of the human body. 3. Hot heat can cause colds and blood easily. "Generating wind" means that the intrusion of heat evil into the human body can easily cause "internal movement of liver wind". The internal movement of liver wind caused by heat evil is also called "extreme heat produces wind". There are two mechanisms for generating wind: first, heat evil consumes body fluids, causing the muscles and arteries to lose nourishment, and tremors of the hands and feet occur; second, excessive heat tends to help yang, causing the liver yang to rise and move uncontrollably. Transform into wind. "Blood-promoting" refers to heat evil as a disease, which can easily cause various bleeding symptoms, such as vomiting blood, blood in the stool, skin spots, etc. Its mechanism also has two points: first, the heat evil accelerates the blood flow, forcing the blood to overflow and easily lead to bleeding; second, the heat evil can burn the blood collaterals and cause the blood to flow out of the veins. 4. Hotness easily disturbs the mind. 5. Fire evil can easily cause sores and carbuncles.

So getting angry includes the following meanings: inflammation, hemorrhage, high blood pressure, vomiting blood, blood in the stool, skin rashes, sores, irritability, dry mouth, sores at the corners of the mouth, and tongue irritation. Blisters etc.