Photo taken on July 19, 2021 shows an employee working at the Changlu Daqinghe saltworks in Tangshan, north China's Hebei Province. (Photo by Li Lei/Xinhua)
Aerial photo taken on July 19, 2021 shows an employee working at the Changlu Daqinghe saltworks in Tangshan, north China's Hebei Province. (Photo by Li Lei/Xinhua)
Aerial photo taken on July 19, 2021 shows an employee loading salt at the Changlu Daqinghe saltworks in Tangshan, north China's Hebei Province. (Photo by Li Lei/Xinhua)
Photo taken on July 19, 2021 shows an employee working at the Changlu Daqinghe saltworks in Tangshan, north China's Hebei Province. (Photo by Li Lei/Xinhua)
Aerial photo taken on July 19, 2021 shows an employee working at the Changlu Daqinghe saltworks in Tangshan, north China's Hebei Province. (Photo by Li Lei/Xinhua)
Aerial photo taken on July 19, 2021 shows an employee working at the Changlu Daqinghe saltworks in Tangshan, north China's Hebei Province. (Photo by Li Lei/Xinhua)
