Ninth grade students at Hohhot No 35 Middle School head back to school on March 30. Schools in North China’s Inner Mongolia autonomous region resumed classes for the ninth and 12th grade students on the day. The back-to-school involved 371,000 students. [Photo/Xinhua]

Hohhot students take their body temperature before entering teaching buildings on March 30. [Photo/Xinhua]

Ninth grade students at Hohhot No 35 Middle School attend class wearing masks, March 30. [Photo/Xinhua]