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Tourists enjoy the scenery of the golden birch forest in Urad Front Banner of Bayan Nur, north China's Inner Mongolia Autonomous Region, Oct. 2, 2018. (Xinhua/Zhi Maosheng)

Tourists enjoy the scenery of the golden birch forest in Urad Front Banner of Bayan Nur, north China's Inner Mongolia Autonomous Region, Oct. 2, 2018. (Xinhua/Zhi Maosheng)