Freezing fog shrouds the Diwopu International Airport in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, Feb. 18, 2016. (Photo/people.cn)
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Freezing fog shrouds the Diwopu International Airport in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, Feb. 18, 2016. (Photo/people.cn)