Open the door. In order to facilitate students' dining, Huazhong Agricultural University extended its business hours at noon and evening by one hour. In the evening, there are seven or eight food stalls in Huiyuan canteen, and the third floor of Huiyuan canteen lasts until about ten o'clock. Entering Huiyuan canteen, in addition to routine code scanning and temperature measurement, the staff will also distribute gloves to avoid cross-infection.