A: According to historical records, Qin established a monitoring system. In the central government, Yushitai is the official organization, Yushitai is the official, and local officials supervise Yushitai. Qin's censor system originated from the historian system in the Western Zhou Dynasty, the Spring and Autumn Period and the Warring States Period. In the Qin Dynasty, with the establishment of centralized autocratic monarchy system, the imperial censor who used to eulogize books and issue decrees around the monarch developed into a part-time picket. According to historical records, the responsibilities of the imperial censor in the Qin Dynasty were quite extensive.

As one of the "three fairs", the imperial censor was the highest supervisor of the Qin Dynasty and the leader of many imperial censors. Its position is very prominent above the court. The Imperial History Doctor led his subordinate officials to form the Imperial History Office (Taiwan), which constituted the central supervisory organ of the Qin Dynasty. Qin also has an imperial history in each county, and the imperial history is an official sent by the court to carry out supervision tasks. His main duty is to picket the county officials and participate in the management of criminal prisons. However, the censor is not a local official position, nor is it stationed in a local place, but belongs to the censor's office (Taiwan Province) and is directly under the command and control of the censor and censor.

As can be seen from the above, the imperial supervision system in Qin dynasty is still in its infancy. Although its censors and censors have the duty of picketing and assisting the emperor to supervise officials, they still have other administrative affairs and are not full-time supervisory officials. The supervision system initiated by the Qin Dynasty was not only inherited by later generations, but also formed a major feature of China's ancient political system and judicial system by examining officials, which had a far-reaching historical impact.