On September 1, primary and secondary schools across the country ushered in the opening season. (on September 1, Shanghai, parents and students took a group photo at the school gate. On that day, Shanghai primary and secondary schools and kindergartens officially opened.) (on September 1, Shanghai, parents and students took a group photo at the school gate. On that day, Shanghai primary and secondary schools and kindergartens officially opened.) (on September 1, in Shanghai new century Hongqiao kindergarten, teachers guided children to enter the classroom in an orderly manner. On that day, Shanghai primary and secondary schools and kindergartens officially opened.) (on September 1, in Shanghai new century Hongqiao kindergarten, the teachers welcomed the children. On that day, Shanghai primary and secondary schools and kindergartens officially opened.) (September 1 is the opening day of secondary schools, primary schools and kindergartens in Hong Kong. At 7:30 am, students from a primary school in Kennedy Town returned to school one after another. The picture shows students returning to school.) (September 1 is the opening day of secondary schools, primary schools and kindergartens in Hong Kong. At 7:30 am, students from a primary school in Kennedy Town returned to school one after another. The picture shows students returning to school in an orderly manner.) (September 1 is the opening day of secondary schools, primary schools and kindergartens in Hong Kong. After sending their children back to school, parents of Kennedy Town primary school will look at their children outside the school.) (on September 1, Beijing's primary and secondary schools opened as scheduled. At the second branch of Beijing middle school, welcome signs with intimate quotations were erected on both sides of the student passage to welcome students back to the campus.) (on September 1, Beijing's primary and secondary schools opened as scheduled. At the second branch of Beijing middle school, welcome signs with intimate quotations were erected on both sides of the student passage to welcome students back to the campus.) (news agency)