This title has been used in some places in the south until modern times.
Why did the ancients call doctors "practitioners"? In the ignorant era of any nation, medicine that can cure diseases and save lives is always underdeveloped. Doctors and witchcraft are always intertwined, and they can't tell what medicine is and what witchcraft is. Doctors and wizards are collectively called "witch doctors".
According to records, in the Tang Dynasty, the status of witch doctors was very low, but some royal doctors who had treated the royal family for a long time received extra rewards from the emperor. People call witch doctors with medical skills doctors or doctors to show respect.
In Song Dynasty, doctor or doctor replaced witch doctor and became a professional name. But there is a strange phenomenon that most doctors in the north of the Yellow River are called "doctors", while those in the south of the Yellow River are called "doctors". As for what caused this, no one can tell.
In the early Han Dynasty, there were mainly two kinds of officials. One is to select officials at all levels according to their ranks, and the other is to select from among the lang officials, that is, Zhong Lang, Assistant Lang, Lang Zhong and Negotiator Lang under the orders of a lang zhong.
Lang Guan's duty is to guard the palace and be the emperor's attendant. After a period of time, if there are vacancies in the central or local officials, they can be selected from among the lang officials.
By the time of Emperor Wu of the Han Dynasty, the military landlords had declined. Langguan mostly comes from "Ren Zi" or "Yong Xuan", so it is difficult to select real talents.