What does a patrolman do?

The name of the patrolman evolved from the word "patrol"

Patrol appeared earlier in China. In the early Qing dynasty, the capital set up a patrol camp. The governor's yamen and other yamen at all levels have inspectors who are responsible for guarding, detecting and arresting criminals. Huang Tianba in the old play belongs to the police. His job is to arrest criminals patrolling the government and eliminate the forces and hidden dangers facing the government. As a result, many "fugitives" were buried in his hands. There is a "Patana" in the old Peking Opera, which is the story. Of course, patrol also plays an important role in maintaining public order, street order and civilian safety.

Establish a positive role.