First of all, the global system (the student status of all schools in the province is accumulated together), the local system (the student status data of one school or multiple schools) and the ID number already exist, indicating that the students corresponding to the ID number already exist in the global system (all schools in the province), but not necessarily in the local system (the student status data of your school). At this time, the school corresponding to the student's ID card needs to retrieve the student status data, and the education bureau where the school is located agrees. In this way, the student status data corresponding to the ID card will be in your school system.