What is the official position of "Yin of Lingling County" in history and which dynasty did it exist in?

Counties are an ancient administrative region of China, which first appeared in the Warring States Period, and its area is generally larger than that of counties. After Qin Shihuang unified the six countries, he implemented the county system throughout the country and divided the country into 36 counties. In fact, you can recall the picture in your mind and roughly know that the actual scope of a county is very large. Knowing the meaning of "county", it is obvious that "Yin" is an official position and "County Yin" is the chief executive in charge of a county.

Speaking of "Yin", it is an official name. It can be traced back to the Yin and Shang Dynasties. During the Shang Dynasty, "Yin" was mainly responsible for the people's work of collecting scriptures in the fields. The seventh article of the Third Edition of Yin Ruins records: "Make Yin a field." In the Western Zhou Dynasty, Yin's duty became a historian, in charge of books, sacrifices and other ceremonies. "Shen Yanming": "The book orders Shen." During the Spring and Autumn Period, the prime minister of Chu was also called "Ling Yin". In the film and television drama "Daqin Empire", we can see Ling Yin of Chu State. In the Han Dynasty, Yin became the chief executive of Beijing. For example, Jing and He Nanyin. Beijing is the mayor of Beijing now. During the Tang and Five Dynasties, Yin became an official of the imperial court. Such as Fengxiang prefect and Chengdu prefect. Later Song, Liao, Jin, Ming and Qing all followed its system. In the Yuan Dynasty, there was an accident, and the county magistrate was called Yin.

It can be seen that the word "Yin" and even the size of official positions are different in different periods. "County Yin" may appear in the history of Southern and Northern Dynasties, Eastern Jin Dynasty, Western Jin Dynasty, Eastern Han Dynasty and Western Han Dynasty. Moreover, after the Han Dynasty, there was no official position of "County Yin".