A senior student scans a health QR code with a smartphone before entering the Zigui No. 2 Senior High School in Zigui County of Yichang City, central China's Hubei Province, May 6, 2020. Students in their final year of high and vocational schools in Hubei returned to campus on Wednesday. (Photo by Wang Huifu/Xinhua)
A senior student holding books in arms walks into the Xuan'en No. 1 Senior High School in Xuan'en County, central China's Hubei Province, May 6, 2020. Students in their final year of high and vocational schools in Hubei returned to campus on Wednesday. (Photo by Song Wen/Xinhua)
Senior students study to prepare for the college entrance exam in a classroom of Xiantao Middle School in Xiantao City, central China's Hubei Province, May 6, 2020. Students in their final year of high and vocational schools in Hubei returned to campus on Wednesday. (Photo by Du Lihua/Xinhua)
Senior students have body temperature checked before entering classroom at the Baokang No. 1 Middle School in Baokang County of Xiangyang City, central China's Hubei Province, May 6, 2020. Students in their final year of high and vocational schools in Hubei returned to campus on Wednesday. (Photo by Yang Tao/Xinhua)
Senior students dine while keeping a distance from each other in the canteen of Zigui No. 2 Senior High School in Zigui County of Yichang City, central China's Hubei Province, May 6, 2020. Students in their final year of high and vocational schools in Hubei returned to campus on Wednesday. (Photo by Zheng Jiayu/Xinhua)
Senior students walk into the Wugang No. 3 High School in Wuhan, central China's Hubei Province, May 6, 2020. Students in their final year of high and vocational schools in Hubei returned to campus on Wednesday. (Photo by Wang Yongsheng/Xinhua)
A volunteer (L) helps a senior student pull the suitcase at the campus of Enshi No. 1 Senior Middle School in Enshi, central China's Hubei Province, May 6, 2020. Students in their final year of high and vocational schools in Hubei returned to campus on Wednesday. (Photo by Tian Daiming/Xinhua)
Senior students have a class on epidemic prevention knowledge in a classroom of Donghu High School in Yiling District of Yichang City, central China's Hubei Province, May 6, 2020. Students in their final year of high and vocational schools in Hubei returned to campus on Wednesday. (Photo by Zhang Guorong/Xinhua)
A senior student holding books in arms walks into the Wuhan No. 17 High School in Wuhan, central China's Hubei Province, May 6, 2020. Students in their final year of high and vocational schools in Hubei returned to campus on Wednesday. (Photo by Ke Hao/Xinhua)
