At 10 p.m., when most people are ready to go to bed, they start patrolling at all places of 9st Street until 4 o’clock in the next morning.

Under the guidance of the police station, they are quite familiar to deal with emergencies. When they hear the call in the intercom, they will immediately arrive at the scene. They deal with thing quickly with 3 steps: persuading, isolating and taking away.