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China's Lin Dan falls down during the men's singles 2nd round match against India's H. S. Prannoy at the BWF World Championships 2019 in Basel, Switzerland, Aug. 20, 2019. (Xinhua/Li Jundong)
China's Lin Dan falls down during the men's singles 2nd round match against India's H. S. Prannoy at the BWF World Championships 2019 in Basel, Switzerland, Aug. 20, 2019. (Xinhua/Li Jundong)