A man walks on a street in snow in Dongxian Autonomous County, northwest China's Gansu province, April 18, 2015. Parts of Gansu witnessed snowfalls and a sudden drop in temperature on Saturday. (Photo: Xinhua/Chen Bin)
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A man walks on a street in snow in Dongxian Autonomous County, northwest China's Gansu province, April 18, 2015. Parts of Gansu witnessed snowfalls and a sudden drop in temperature on Saturday. (Photo: Xinhua/Chen Bin)