Students in the final year of senior high schools study in a classroom with transparent boards placed on desks as a precautionary measure against the spread of COVID-19 at Wuhan No. 23 Middle School in Wuhan, central China's Hubei Province, May 6, 2020. Students in their final year from 121 high and vocational schools returned to campus on May 6 in Wuhan. (Xinhua/Xiao Yijiu)
