What is the reason why schools in Linzhou don't open now?

According to relevant data, the cause of the epidemic is that schools in Linzhou are not open now. Many schools in Linzhou issued notices to adjust the start time. Due to the epidemic situation, the original registration time of freshmen (September 2, 2022) and the original start time of other grades (September 1 day, 2022) were temporarily postponed, and the specific start time will be announced later. Therefore, schools in Linzhou are not open now, which is the cause of the epidemic.