Security guards with batons and fluorescent uniforms patrolled around the school gate, the principal managed the children who arrived at school early at 7 o'clock, kindergartens dismissed classes in a staggered way and handed each child over to their parents... Yesterday was the first day of the implementation of the new "Duties of School Gatekeepers" in Nanjing City. During the interview, reporters found that many changes had taken place in front of primary and secondary schools and kindergartens. There were not only full-time security guards on guard, but also policemen on duty around the schools. Parents expressed their welcome for these measures and hoped that these strict preventive measures for campus safety could become routine.