Why did the doctor in the official name become the doctor's name?

Calling doctors "doctors" is still very popular; The so-called "card shark" is rare in society except for some elderly people. But decades ago, the nickname "doctor" was still very common.

In China, from the pre-Qin Dynasty to the late Qing Dynasty, "Doctor" and "Doctor" were official titles. Before the Tang and Song Dynasties, the names of doctors were complicated, and they were generally called according to their specialties, such as food doctor, disease doctor and gold sore doctor. "Doctor" is the first name for people who study medicine. It first appeared in the Six Classics of Tang Dynasty, that is, people who study medicine. In the Tang Dynasty, he studied medicine, so he was called a "doctor". Later, the names of medical practitioners were still different. It was not until modern times that doctors became the general term for doctors.

During the Three Dynasties, both emperors and princes set up doctoral positions, which were divided into three levels. Since the Qin and Han dynasties, there have been such names as imperial doctor and admonition officer. After the Sui and Tang Dynasties, the title of doctor was senior rank. During the Ming and Qing Dynasties, officials did not need doctors as official names. In the Qing Dynasty, the official ranks ranged from first class to fifth class, also known as doctors. Doctor is also an ancient title. For example, during the Qin and Han Dynasties, titles were divided into 20 levels, among which doctors ranked fifth. During the Sui, Tang, Ming and Qing Dynasties, Dr. Guanglu and Dr. Rong Lu were dedicated to civil servants.

During the reign of Song Huizong, the official ranks were rearranged, and doctors, medical practitioners and other positions were set up among medical officials. So Taiyi is called a doctor. After the end of the Tang Dynasty and the Five Dynasties, official titles flooded, gradually forming a social atmosphere of calling doctors by official names, so people respected doctors as "doctors".

In order to distinguish it from the official name, the word "big" that calls a doctor "doctor" is pronounced dài, not dà. It seems that doctors are no longer called "big" now, but sometimes they are called "big" when they are called official positions or titles. I can't figure out the cause and effect and make a joke.

The official position of Langzhong began in the Warring States Period, and after Qin and Han Dynasties, it was successively inherited by Sui, Tang, Song, Yuan, Ming and Qing Dynasties. The ministries set up a card shark as a senior official and assistant minister below Shangshu, which was abolished in the late Qing Dynasty. Because there was a "doctor" position among the medical officials in the Song Dynasty, he was called a doctor or a person who sold drugs to treat diseases. This often appears in various notes, plays, poems and novels.

It is worth noting that doctors have been called "doctor" and "doctor" for more than 0/000 years before/kloc-,so the northern region has always been called "doctor" and the southern region has always been called "doctor"; Moreover, the north is a general term for traditional Chinese medicine and western medicine, while the south refers to traditional Chinese medicine, also known as "doctor".