This spring semester is the first semester after the implementation of "Class B and Class B management" for COVID-19 infection. With the beginning of the school season around the country, teachers and students have returned to the campus where they have been away for many days. What are the new changes in the requirements for epidemic prevention and control on campus? Has the state of teachers and students been adjusted? How to arrange campus life in the new semester? The prevention and control plan of no longer testing nucleic acid epidemic in school has updated the Operation Guide for the Prevention and Control of novel coronavirus Infection in Schools recently issued by the National Health Commission, which puts forward new requirements for the prevention and control of COVID-19 infection on campus after the implementation of "Class B and Class B control". The reporter saw in the primary and secondary school campus that the daily arrangement of the school also changed. ——No nucleic acid certificate will be provided for teachers and students to enter the school. "According to the statistics of a period of time ago, there are very few students in our school who have not yet passed the yang test," said Duan Chunlan, the school doctor of Qingnianhu Primary School in Xicheng District, Beijing. At present, we are doing a health self-test before school according to the guide requirements. If there are 11 kinds of symptoms such as fever, we must report truthfully, and delay returning to school after confirming the infection. According to the requirements of the guide, although nucleic acid testing will not be carried out when entering the school, teachers and students will measure their body temperature when entering the school, and insist on the morning and afternoon examination in the class. In case of fever symptoms above 37.3 ℃, take corresponding measures such as observation and retest, and notice to leave school. ——The daily protection of teachers and students is not relaxed. At the Shanghai Experimental School of the Chinese Academy of Sciences, the reporter saw that public disinfection supplies were placed at the door of the classroom and the entrance of the stairs, and partitions were installed on the dining table of the canteen. The headmaster Xia Hongmei said that in the new semester, the system of staggered meals and set meals will still be adopted to reduce the number of people gathered, and students can determine the food mix in advance. He Xiangdong, the general affairs director of Qingnian Lake Primary School in Xicheng District, Beijing, introduced that according to the relevant documents after the "Class B and Class B management", the school has formulated new plans such as the Emergency Response Plan for novel coronavirus Infection in Qingnian Lake Primary School, the Work Plan for Prevention and Control of the Epidemic Situation in the Spring of Qingnian Lake Primary School to respond to the changes of the epidemic at any time. "If there is an epidemic, two health observation rooms will be set up in the school to temporarily stay for observation, antigen screening, and fever reduction for teachers and students with 11 kinds of symptoms, such as fever. If there are fever students, the parents will be notified immediately, and the parents will be guided to safely take the students home and continue to track the relevant situation." Zhang Yibao, the principal of Beijing Runfeng School, said. The new class "life education" is not busy at the beginning of school. After experiencing the epidemic, he returned to the campus and felt the value of life. The reporter learned that many schools have listed "mental health" as an important content of the first lesson of school, helping students to adjust from the long-term home state and embrace campus life with a positive attitude. This week, schools began in Hebei, Henan and other places. On the 7th, Zhang Xiao, a fourth grade student of Shenxing Primary School in Shijiazhuang, Hebei, told reporters that the teacher did not teach new courses on the first day. "We plan to slow down the pace of teaching, review for a week first, and give children enough time to adapt," said Sun, a teacher at Shenxing Primary School. "After a long time in class, I just returned to the classroom today, and I may not adapt to it, which is very normal. If I can sit in the classroom today, the teacher will praise you!" Li Baozhi, the headmaster of the No. 4 Middle School in Hengshui, Hebei Province, said that factors such as long-term home-based learning, interpersonal interaction and adolescent impulse are intertwined