Recently, the Immigration Management Police of Nanyi Border Police Station, Nyingchi City, southwest China's Xizang Autonomous Region, went to local schools to publicize the knowledge of security protection, carried out the investigation of security risks and disaster prevention and mitigation exercises with students, which further enhanced the knowledge and skills of safety protection of local teachers and students, and laid a good foundation for maintaining the security and stability of border areas. [Photo/ Zhang Meng, Wang Shan, Xie Xiaochun]