Ancient official names. In the pre-Qin vassal States after the Western Zhou Dynasty, there were three levels below the monarch: Qing, doctor and scholar. Doctors are hereditary and have fiefs. Later generations took the doctor as their general official position. After the Qin and Han dynasties, the central government had a physician, and the consultants included admonishers, traditional Chinese medicine practitioners and doctors from Guanglu. By the time of the Tang and Song Dynasties, there were still official positions, such as the imperial historian and the imperial historian, which were abolished in the Ming and Qing Dynasties. After the Sui and Tang Dynasties, the doctor was awarded a senior official title. Senior civil servants in Qing dynasty were called doctors, and military titles were generals. During the reign of Song Huizong, the ranks were rearranged, and doctors were no longer under "doctors", so doctors are still called doctors today. Officials in Ming and Qing dynasties did not need doctors as official names.