In truth, expanding the four bureaus created a more specific separation of duties of the divisions under them. This was so to keep up with the heftier and more complicated problems of the territory.
When the conditions were fulfilled, the divisions could also rise up to become departments.
The first step was to promote the Meritorious Service Division under the Administration Bureau into the Official Ruling Department.
The Official Ruling Department was similar to the Personnel Department of olden times. Under it, there was the Personnel Division, Merit Title Division, Evaluation Division, and the Records Division. It was in charge of the evaluation of officials, their promotions and demotions, as well as their rewards.
For the position of the first director of the Official Ruling Department, Ouyang Shuo chose Zhang Tingyu.