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Aerial photo taken on Oct. 31, 2019 shows a section of the Great Wall built in Ming dynasty (1368-1644) in Qingshuihe County, Hohhot, capital of north China's Inner Mongolia Autonomous Region. (Xinhua/Peng Yuan)
Aerial photo taken on Oct. 31, 2019 shows a section of the Great Wall built in Ming dynasty (1368-1644) in Qingshuihe County, Hohhot, capital of north China's Inner Mongolia Autonomous Region. (Xinhua/Peng Yuan)