Top 10 most polluted Chinese cities in 2013
- By Gong Yingchun
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E-mail China.org.cn, January 15, 2014
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Xi'an
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A cleaner wearing a mask for protection from air pollution walks through the haze in Xi'an, capital of northwest China's Shaanxi Province. [File photo] |
Province: Shaanxi
Average annual PM2.5 density: 104.2
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