High school students visit a historical site in Hejian City, north China's Hebei Province, June 10, 2017. China celebrated its first Cultural and Natural Heritage Day on Saturday. (Xinhua/Zhu Xudong)
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High school students visit a historical site in Hejian City, north China's Hebei Province, June 10, 2017. China celebrated its first Cultural and Natural Heritage Day on Saturday. (Xinhua/Zhu Xudong)
