A staff member disinfects a student's hands at the No. 9 Middle School in Zhengzhou, central China's Henan Province, April 7, 2020. Students in the final year of senior high school returned to school on Tuesday in Henan. (Xinhua/Li An)
A staff member sprays disinfectant at a teaching building at the No. 9 Middle School in Zhengzhou, central China's Henan Province, April 7, 2020. Students in the final year of senior high school returned to school on Tuesday in Henan. (Xinhua/Li An)
Students queue up to go through the body temperature monitoring system at the No. 9 Middle School in Zhengzhou, central China's Henan Province, April 7, 2020. Students in the final year of senior high school returned to school on Tuesday in Henan. (Xinhua/Li An)
Students attend a class at the Experimental Middle School of Henan Province in Zhengzhou, central China's Henan Province, April 7, 2020. Students in the final year of senior high school returned to school on Tuesday in Henan. (Xinhua/Li Jianan)
Students attend a class at the Experimental Middle School of Henan Province in Zhengzhou, central China's Henan Province, April 7, 2020. Students in the final year of senior high school returned to school on Tuesday in Henan. (Xinhua/Li Jianan)
Students attend a class at the No. 2 High School in Nanning, south China's Guangxi Zhuang Autonomous Region, April 7, 2020. Students in the final year of senior and junior high schools returned to school on Tuesday in Guangxi. (Xinhua/Zhou Hua)
Students study in the morning at the No. 2 High School in Nanning, south China's Guangxi Zhuang Autonomous Region, April 7, 2020. Students in the final year of senior and junior high schools returned to school on Tuesday in Guangxi. (Xinhua/Cui Bowen)
Students return to the No. 2 High School in Nanning, south China's Guangxi Zhuang Autonomous Region, April 7, 2020. Students in the final year of senior and junior high schools returned to school on Tuesday in Guangxi. (Xinhua/Cui Bowen)
A teacher gives a lesson on the coronavirus epidemic prevention at the No. 2 High School in Nanning, south China's Guangxi Zhuang Autonomous Region, April 7, 2020. Students in the final year of senior and junior high schools returned to school on Tuesday in Guangxi. (Xinhua/Cui Bowen)
Students take an exam at the No. 3 High School in Nanning, south China's Guangxi Zhuang Autonomous Region, April 7, 2020. Students in the final year of senior and junior high schools returned to school on Tuesday in Guangxi. (Xinhua/Cao Yiming)
Students attend a class at the No. 2 High School in Nanning, south China's Guangxi Zhuang Autonomous Region, April 7, 2020. Students in the final year of senior and junior high schools returned to school on Tuesday in Guangxi. (Xinhua/Zhou Hua)
A member of staff disinfects the hallway of a teaching building at the No. 3 High School in Nanning, south China's Guangxi Zhuang Autonomous Region, April 7, 2020. Students in the final year of senior and junior high schools returned to school on Tuesday in Guangxi. (Xinhua/Cao Yiming)
