Department, originally referring to Li Hu's salute and other six departments; Division: all six departments are under the "Division" department; Division, official office, yamen; The hall is also the general name of the official department, and: in the Qing Dynasty, there were generally yamen under the county, but there were also halls; The bureau signed by ancient officials was established under the central government in the Northern Qi Dynasty. Department, originally referring to treatment and disposal; Branch, the feudal dynasty central government departments called "branch", and the six departments were also called "six departments".
As can be seen from the above, the names of "Ministry, Department, Division, Department, Bureau, Division and Division" are all the names of ancient government agencies except "Division and Division", but their grades are not exactly the same as today's.