What's the name of the ancient health messenger in China?

Doctor or doctor? According to relevant public information, there are many names for doctors in historical novels or costume TV dramas, and the two most common names are doctor and doctor. A doctor who runs a medical clinic is called a doctor, and a doctor refers to a barefoot doctor who runs a herbal shop or shouts loudly in the street or walks around treating diseases. The title of doctor was an official position in ancient times. In the pre-Qin vassal States after the Western Zhou Dynasty, there were three levels below the monarch: Qing, doctor and scholar. After the Qin and Han dynasties, there appeared such official positions as admonition officer, traditional Chinese medicine, and doctor Guanglu. In the Tang and Song Dynasties, officials still advised doctors, and in the Ming and Qing Dynasties. In the Song Dynasty, doctors and doctors began to have contact.