Ancient military city in Gansu gleams in winter uniform

A bird's-eye view of the ancient city site in Ganzhou after snowfall in Zhangye City, northwest China's Gansu Province, on Nov. 22, 2021. [Photo: CNSPHOTO]

A bird's-eye view of the ancient city site in Ganzhou after snowfall in Zhangye City, northwest China's Gansu Province, on Nov. 22, 2021. [Photo: CNSPHOTO]

A gate tower at the ancient city site of Ganzhou is pictured after snowfall in Zhangye City, northwest China's Gansu Province, on Nov. 21, 2021. [Photo: CNSPHOTO]

A bird's-eye view of the ancient city site in Ganzhou after snowfall in Zhangye City, northwest China's Gansu Province, on Nov. 22, 2021. [Photo: CNSPHOTO]