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Aerial photo taken on Nov. 11, 2019 shows the winter scenery at the Hongshankou Great Wall in Tangshan City, north China's Hebei Province. (Xinhua/Mu Yu)
Aerial photo taken on Nov. 11, 2019 shows the winter scenery at the Hongshankou Great Wall in Tangshan City, north China's Hebei Province. (Xinhua/Mu Yu)