An employee works at a workshop of an electronic material company in Hohhot, capital of north China's Inner Mongolia Autonomous Region, March 10, 2020. Up to now, more than 93 percent of the 31 large industrial enterprises in Saihan District of Hohhot have returned to work. (Xinhua/Peng Yuan)

An employee works at a workshop of a quartz company in Hohhot, capital of north China's Inner Mongolia Autonomous Region, March 10, 2020. Up to now, more than 93 percent of the 31 large industrial enterprises in Saihan District of Hohhot have returned to work. (Xinhua/Peng Yuan)

Employees work at a workshop of an electronic material company in Hohhot, capital of north China's Inner Mongolia Autonomous Region, March 10, 2020. Up to now, more than 93 percent of the 31 large industrial enterprises in Saihan District of Hohhot have returned to work. (Xinhua/Peng Yuan)

Employees work at a workshop of an electronic material company in Hohhot, capital of north China's Inner Mongolia Autonomous Region, March 10, 2020. Up to now, more than 93 percent of the 31 large industrial enterprises in Saihan District of Hohhot have returned to work. (Xinhua/Peng Yuan)