Aerial photo taken on Nov. 28, 2020 shows an employee working in the Changlu Daqinghe saltworks in Tangshan City, north China's Hebei Province.Photo:Xinhua
Aerial photo taken on Nov. 28, 2020 shows an employee working in the Changlu Daqinghe saltworks in Tangshan City, north China's Hebei Province.Photo:Xinhua
Aerial photo taken on Nov. 28, 2020 shows an employee working in the Changlu Daqinghe saltworks in Tangshan City, north China's Hebei Province.Photo:Xinhua
Aerial photo taken on Nov. 28, 2020 shows an employee working in the Changlu Daqinghe saltworks in Tangshan City, north China's Hebei Province.Photo:Xinhua