Traditional Chinese medicine (TCM) is created by Chinese working people of the Han nationality. It is a discipline that studies human physiology and pathology alongside the diagnosis, prevention and treatment of diseases. It is based on the theory of yin-yang and five elements. It considers Qi, body conditions and energy as a unity. It uses a combined method of "looking, listening, questioning and feeling the pulse", to identify the cause, nature and location of diseases, so that diagnosis can be made, treatment plan can be formulated.