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A heron flies over trees in smog-shrouded Yangxian County of Hanzhong City, northwest China's Shaanxi Province, Jan. 18, 2018. (Xinhua/Liu Xiao)
NW China's Hanzhong City shrouded by smog
Source: Xinhua| 2018-01-19 13:52:13|Editor: Liangyu
KEY WORDS: smog
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