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Photo taken on May 13, 2019 shows the inside view of Wanxiang karst cave in Hanwang Township of Longnan City, northwest China's Gansu Province. (Xinhua/Ma Ning)
Tourists view Wanxiang karst cave in NW China's Gansu
Source: Xinhua| 2019-05-13 22:23:58|Editor: Liangyu
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