Fog Envelops North China

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Cyclists wearing masks ride along a road as heavy fog engulfs the... News PhotoChina - East Asia,City,Cycling,Environmental Issues,Fog,Horizontal,Riding,Road,ZhengzhouPhotographer Collection: ChinaFotoPress 2013 ChinaFotoPressZHENGZHOU, CHINA - JANUARY 28: (CHINA OUT) Cyclists wearing masks ride along a road as heavy fog engulfs the city on January 28, 2013 in Zhengzhou, China. China's National Meteorological Center (NMC) issued a blue-coded alert on January 27 as a thick fog will shroud central and eastern parts of China in the following two days. (Photo by ChinaFotoPress/ChinaFotoPress via Getty Images)