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Students wearingcaps gather at the Havis Amanda statue to celebrate the WalpurgisDay (Vappu), a carnival-style festival, in Helsinki, capital ofFinland, on April 30, 2017. (Xinhua/Li Jizhi)
Students wearingcaps gather at the Havis Amanda statue to celebrate the WalpurgisDay (Vappu), a carnival-style festival, in Helsinki, capital ofFinland, on April 30, 2017. (Xinhua/Li Jizhi)