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Passengers walk on the smog-shrouded platform at the Hangzhoudong Railway Station in Hangzhou, capital of east China's Zhejiang Province, Jan. 18, 2018. (Xinhua/Huang Zongzhi)
Passengers walk on the smog-shrouded platform at the Hangzhoudong Railway Station in Hangzhou, capital of east China's Zhejiang Province, Jan. 18, 2018. (Xinhua/Huang Zongzhi)