A worker examines facilities in the coal liquefaction factory of CHN Energy in Ordos, north China's Inner Mongolia Autonomous Region, April 10, 2019.
A worker shows sewage after treatment in the coal liquefaction factory of CHN Energy in Ordos, north China's Inner Mongolia Autonomous Region, April 11, 2019.
A worker checks byproduct pitch in the coal liquefaction factory of CHN Energy in Ordos, north China's Inner Mongolia Autonomous Region, April 10, 2019.
Aerial photo taken on April 11, 2019 shows the coal liquefaction factory of CHN Energy in Ordos, north China's Inner Mongolia Autonomous Region.