Why did the recruitment time of Baotou Steel Vocational and Technical School take so long?

Epidemic situation. Baotou Steel Vocational and Technical College was originally scheduled to hold a recruitment interview exam at 9:00 am on August 14, 2022. Due to the severe situation of epidemic prevention and control, it has to be postponed, and the epidemic has not been well controlled, so the extension time is longer. The registration of open recruitment of college graduates in 2022 ended from June 18 to June 24, 2022. After a preliminary examination of the applicant's qualifications,