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Tourists enjoy the scenery at the Hongyegu (Red Leaves Valley) scenic spot in Jinan, east China's Shandong Province, Oct. 22, 2019. (Xinhua/Guo Xulei)

Tourists enjoy the scenery at the Hongyegu (Red Leaves Valley) scenic spot in Jinan, east China's Shandong Province, Oct. 22, 2019. (Xinhua/Guo Xulei)