April 20 is the first day for students in Grades 4-6 of primary school in Hangzhou to return to school. Starting from 7:50 am, senior students of the Hangzhou Wensan Education Group returned to school one after another.

Under the guidance of teachers and volunteers, students queued up at regular intervals and entered the campus in an orderly manner after swiping their citizen cards and taking their temperature.

On the same day, students in Grades 4-8 and Grades 10-11 have gradually returned to school in most cities of Zhejiang.