Two-way automatic poster generation cannot be in 12 am. According to the relevant information of the relevant data information, it can be known that the two-way automatic punching must be completed before 10 in the morning. Students are required to complete the health punch-in before 10: 00 every morning through the double-free service, and submit screenshots of all cohabitants' health codes during the uploading process. Staff and roommates need to punch in their health cards every day, and the school will pay attention to the abnormal health codes of teachers and students every day to remind and prevent them.