In feudal hierarchical society, guards of different ranks wore clothes with different colors, accessories and decorative patterns to distinguish the good from the bad.

The rank and establishment of the guards in the Security Department are as follows:

The first-class guards-also known as the "first-class guards", have 60 people;

Secondary escort-Zhengsipin, 150 people;

Third-class guards-positive five products, 270 people;

Blue Ridge Guards-Zhengliupin, 900 people.

In addition, there are imperial guards walking with the national flag:

There are 9 first-class guards, 2 second-class guards 18, and 66 third-class guards. Later, the position of four-level guards was added from the five products, which was only a level of three-level guards of the imperial clan.