Chinese medicine takes yin and yang and the five elements as the theoretical basis, and regards the human body as the unity of qi, form and spirit. Through the method of “looking, smelling, asking and cutting”, the four diagnostic methods are used to investigate the cause, nature and location of the disease, analyze the disease mechanism and the changes in the internal organs, meridians, joints, qi, blood and fluids, determine the waxing and waning of evil and positive, and then derive the name of the disease and summarize the evidence type.
