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Photo taken on May 10, 2019 shows the construction site of the National Cross-Country Skiing Center of the 2022 Winter Olympic Games, in Zhangjiakou, north China's Hebei Province. (Xinhua/Xing Guangli)
Photo taken on May 10, 2019 shows the construction site of the National Cross-Country Skiing Center of the 2022 Winter Olympic Games, in Zhangjiakou, north China's Hebei Province. (Xinhua/Xing Guangli)