In Chinese medicine, coughs can be divided into two types of coughs: external coughs and internal coughs, according to the different types of evil Qi felt. The so-called external cough is a cough that occurs when the patient feels the six external evils, such as wind, cold, heat, humidity, dryness and fire, while the internal cough is caused by emotional problems, dietary problems or deficiency problems. Most external coughs are actual symptoms and can be treated by dispersing cold, removing wind, clearing heat, detoxifying the lungs and relieving cough. The treatment course for external coughs is also very short, with good results in 7-10 days. If the cough is internal, the treatment will take longer, usually several months of conditioning.