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Photo taken on May 5, 2018 shows the scenery at the ancient city of Luanzhou in Luanxian County, north China's Hebei Province. (Xinhua/Yang Shiyao)
Photo taken on May 5, 2018 shows the scenery at the ancient city of Luanzhou in Luanxian County, north China's Hebei Province. (Xinhua/Yang Shiyao)