How were the ancient regions divided, such as how were the counties arranged? The more detailed the better, the more written the better.

Zhou: During the reign of Emperor Jing of the Western Han Dynasty, the county magistrate was renamed Taishou and became the chief executive of a county. The past dynasties have not changed. During the Northern and Southern Dynasties, more and more countries joined in. The territory under the jurisdiction of counties has decreased, and the power of counties has been seized by the state secretariat. There is little difference between counties. In the early years of Sui Dynasty, the county was abolished and changed to state secretariat. County is the highest local administrative organization below the central government. After Qin Shihuang unified the six countries, the territory was unprecedented and the world was divided into 36 counties. Later, with the development of the border and the adjustment of county governance, it increased to more than 40 counties. The county magistrate is the highest chief executive of the county, who accepts the orders of the central government and supervises the counties.

The county is the lower administrative organ of the county. The chief of a county is called a county magistrate or county magistrate and is appointed by the court. His main task is to govern the people and manage politics, finance, justice, prison procedures and military service. The county magistrate shall inspect the county magistrate and the county magistrate's work through annual assessment and peacetime inspection.

Fu: The administrative domain name of China from Tang Dynasty to Qing Dynasty, ranking between counties and provinces. State = county >; Prefectures