According to my personal understanding in the army, the officers in China are also pyramid-shaped, and the higher they are, the more difficult they are. Moreover, when they go to the university for the aged, they are basically people over 45 years old or around 45 years old. If they don't enter the national defense university (vulgar/tiger class) or go to the national defense university for further study during this period, they won't have a chance to be promoted to major general (one semester), and the number of places to be promoted to general officers may be only a few hundred percent. There is another saying. There are too many officials and there will be too much competition for promotion. Private conversation! ~``