Chinese geographers have entered a so-called "monster city" in a depopulated area 180 km from Dunhuang for the first time. After investigation, the "monster city" proved to be the largest "Yadan"...
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Chinese geographers have entered a so-called "monster city" in a depopulated area 180 km from Dunhuang for the first time. After investigation, the "monster city" proved to be the largest "Yadan"...