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A herdsman keeps the herd together at the snow-covered Shandan Ranch with the Qilian Mountains in the background in Shandan County of Zhangye City, northwest China's Gansu Province, Jan. 23, 2019. (Xinhua/Chen Bin)
A herdsman keeps the herd together at the snow-covered Shandan Ranch with the Qilian Mountains in the background in Shandan County of Zhangye City, northwest China's Gansu Province, Jan. 23, 2019. (Xinhua/Chen Bin)