Photo shows the special entrance to the campus of Shandong University in Jinan, east China's Shandong Province, May 18, 2020. The Shandong University welcomed the first group of returning students after the epidemic outbreak. (Photo/China News Service)
A staff member helps a student with luggage at Shandong University in Jinan, east China's Shandong Province, May 18, 2020. The Shandong University welcomed the first group of returning students after the epidemic outbreak. (Photo/China News Service)
Photo shows a student taking the nucleic acid test at a testing post set up at Shandong University in Jinan, east China's Shandong Province, May 18, 2020. The Shandong University welcomed the first group of returning students after the epidemic outbreak. (Photo/China News Service)
Students wearing masks are seen in a classroom in Taiyuan, capital city of north China's Shanxi Province, May 18, 2020. Students of fourth, fifth and sixth grades of primary schools in Taiyuan resumed class on Monday. (Photo/China News Service)
Pupils enter Houxiaohe Primary School in Taiyuan, capital city of north China's Shanxi Province, May 18, 2020. Students of fourth, fifth and sixth grades of primary schools in Taiyuan resumed class on Monday. (Photo/China News Service)
A child care teacher conducts morning check to a child at a kindergarten in Liuzhou City, south China's Guangxi Zhuang Autonomous Region, May 18, 2020. Guangxi gradually reopens kindergartens from Monday.