Yes, University Town and PKU Shenzhen are gated with 24 hour security. All campus entrances and dormitory buildings have security guards on duty 24 hours. In addition, the campus card only allows residents to enter dormitory buildings. Any visitors are required to register with the security guard in the lobby.
The campus is located in the suburbs of Shenzhen. The campus is primarily surrounded by the Shenzhen zoo, a golf course and other natural areas. Campus is very safe, but you should still take common sense measures to guard against theft and be aware of your surroundings.
