Students queue up while keeping a distance from each other to scan their health QR codes before entering No. 2 High School of Chiping District in Liaocheng City, east China's Shandong Province, April 15, 2020. East China's Shandong Province on Wednesday partially reopened schools, with third-graders at 804 senior high schools and secondary vocational schools resuming formal school classes as the COVID-19 epidemic waned. (Photo by Zhao Yuguo/Xinhua)
