How did the application of Chinese herbal medicine develop?

China is the country with the most extensive use of Chinese herbal medicine and the richest source of medicine in the world. As early as primitive times, our ancestors were able to contact and understand the possible effects of certain plants or animals on the human body in the process of life and production.

In order to fight against diseases, the above experience has accumulated to a certain extent, which inspires people to pay attention to the therapeutic and toxic effects of some natural products and make use of them. After numerous sporadic, scattered but conscious experiments and observations, people have gradually created and accumulated some rich experience in drug use. People creatively endowed unique physical properties (yin and yang, cold and warm), taste (sour, bitter, sweet, pungent and salty) and the theory of the relationship between things, founded traditional Chinese medicine and formed early drug therapy. With the development of history and the progress of medicine, the variety of drugs has gradually increased. Later, it was found that the combination of several drugs had better effect and formed a compound preparation.