What is the reason for the security guard to handle things at night?

Maintain site safety and supervise patrol.

1. Maintain the safety of the place: at night, the place will face security threats such as theft and burglary, and it needs security patrol to ensure the safety of the place.

2. Surveillance patrol: There are certain security risks in this place at night, which requires security guards to conduct surveillance patrol to find and deal with problems in time.