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Beijing upgrades haze alert from yellow to orange

Updated: 2014-02-23 01:37 (Xinhua)
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Beijing upgrades haze alert from yellow to orange

Buildings are seen through heavy smog in downtown Beijing, capital of 皇冠体育app, Feb. 22, 2014. [Photo/Xinhua]

Beijing upgrades haze alert from yellow to orange
Beijing upgrades haze alert from yellow to orange
Fog, smog to blanket North, Central 皇冠体育app Festival travelers battle heavy fog

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