A boy plays on a riverbed of the Yellow River in Lanzhou, northwest China's Gansu Province, Jan. 10, 2016. Water level of the Lanzhou section of the Yellow River falls during the rainless period in winter. (Photo: Xinhua/Chen Bin)
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A boy plays on a riverbed of the Yellow River in Lanzhou, northwest China's Gansu Province, Jan. 10, 2016. Water level of the Lanzhou section of the Yellow River falls during the rainless period in winter. (Photo: Xinhua/Chen Bin)
