During the Northern and Southern Dynasties, more and more states were added. The territory under the jurisdiction of the county was reduced, and the power of the county was seized by the state secretariat, and there was little difference between the States and counties. At the beginning of Sui Dynasty, the county was abandoned and replaced by the state secretariat. Since then, the satrap is no longer an official name, but only used as another name for the secretariat or magistrate. In Ming and Qing dynasties, it was called the magistrate. Taishou, also known as the county magistrate, was a local official in ancient China, who was generally the local administrator in charge of the administrative district at the county level.
During the Warring States period, the county chief was set up. At that time, many countries set up the county system in the border conflict areas, as a special administrative region that comprehensively exercised military and political power. Li Bing, the chief officer and water conservancy officer, once served as the county chief of Shu County. The secretariat, also known as the emissary, is an official. "Thorn" means to check and ask questions, that is, to supervise.
"History" means "suggestion". In the Qin dynasty, each county set up an empire, which served as a supervisor, and was called the supervisor empire (supervisor empire). In the early Han dynasty, the province was rotated and reset. Emperor Wen neglected his duty with the suggestion, and ordered the Prime Minister to send other personnel to stab all over the country, not often. After abolishing the supervision of the imperial censor in the counties, Emperor Wu of the Han Dynasty divided the whole country into thirteen departments (states) in the fifth year of Yuanfeng (before 106), and each department began to set up a secretariat.