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Niklas Mattsson of Sweden competes during the men's qualification at the FIS Snowboard World Cup 2018 in Beijing, China, Nov. 24, 2017. (Xinhua/Jia Yuchen)

Niklas Mattsson of Sweden competes during the men's qualification at the FIS Snowboard World Cup 2018 in Beijing, China, Nov. 24, 2017. (Xinhua/Jia Yuchen)