Compilation of Xu Yushan's prescription medical records. According to the website of personal library, Xu Yushan's medical records of prescription drugs are the best, which contain classic cases, specific analysis and medical records with many years of clinical experience. Traditional Chinese medicine mainly studies the basic knowledge and skills of human physiology and pathology, disease diagnosis, prevention and rehabilitation, diagnoses and treats diseases from the perspective of traditional Chinese medicine, and regulates the internal organs of the human body.