The Choushi (朝士) is an official who works under the division of the Ministry of Fall and supervises the behavior of other officials. The responsibilities of the choushi includes the security and enforcement of regulations of the palace. The title has been translated as seneschal and commissioner.
The choushi is the only official that can directly report to the monarch about the actions of other officials and suggest punishments. In effect, the choushi's role is to serve as a censure towards other officials to ensure that they are not corrupt.