It is one of the herbs commonly used in clinical practice. It belongs to the lung and liver meridians, is mild, warm, non-toxic, and has a strong clear aroma, and has the function of relieving symptoms, dispersing wind and penetrating rashes. It is pungent and fragrant, long in publishing and dispersing wind, and is mildly warm, not strong and mild in nature, and is the most moderate among the medicines for dispersing wind-cold. It can be widely used in cases of exogenous superficial symptoms, regardless of wind-cold, wind-heat, or unknown cold-heat. It is also used in cases of impermeable measles, itchy rash, sores and ulcers, as well as superficial symptoms, such as vomiting blood, epistaxis, blood in stool, and bleeding.