Why should the public security special police officer be transferred out at the age of 30?

When a special police officer reaches a certain age, his physical fitness and mental strength will decline compared to when he first joined the job.

When a special police officer is almost thirty years old, due to physical reasons, he needs to be transferred from his post as a special police officer. There are several directions: transferred to the criminal police team, economic investigation team, etc., or transferred to a general police station as a civilian police officer. For example, household registration police or district police may also enter the municipal public security bureau to do administrative work.