Chinese Minister of Environmental Protection Li Ganjie (C) takes questions at a press conference on the battle against pollution on the sidelines of the first session of the 13th National People's Congress (NPC) in Beijing, capital of China, March 17, 2018. (Xinhua/Shen Hong)

Chinese Minister of Environmental Protection Li Ganjie answers questions at a press conference on the battle against pollution on the sidelines of the first session of the 13th National People's Congress (NPC) in Beijing, capital of China, March 17, 2018. (Xinhua/Shen Hong)

Chinese Minister of Environmental Protection Li Ganjie takes questions at a press conference on the battle against pollution on the sidelines of the first session of the 13th National People's Congress (NPC) in Beijing, capital of China, March 17, 2018. (Xinhua/Li Xin)