The cause of the epidemic. Anhui Industry and Trade Vocational and Technical College is a public full-time ordinary higher vocational college approved by the Anhui Provincial People's Government and filed by the Ministry of Education. According to relevant data, Anhui Industry and Trade Vocational and Technical College had to close the school due to the epidemic situation, and refused irrelevant personnel to enter the student dormitory. Anyone who went out on campus was approved by his department (college or department).