Beijing issues 1st yellow alert for heavy smog

Updated: 2014-02-20 17:35

By Zheng Xin (chinadaily.com.cn)

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Beijing issues 1st yellow alert for heavy smog

Vehicles run in heavy smog in Beijing, Feb 20, 2014. [Photo/Xinhua]

Beijing issues 1st yellow alert for heavy smog
Beijing issues 1st yellow alert for heavy smog
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