China’s Zhao Yunlei (right) and Zhang Nan (left) compete against Indonesia Tontowi Ahmad and Liliyana Natsir during their mixed doubles semifinal match at the Badminton World Federation championships at Istora Stadium in Jakarta, Indonesia on Saturday.

China's Zhao Yunlei (right) and Zhang Nan (left) compete against Indonesia Tontowi Ahmad and Liliyana Natsir during their mixed doubles semifinal match at the Badminton World Federation championships at Istora Stadium in Jakarta, Indonesia on Saturday
China's Zhao Yunlei (right) and Zhang Nan (left) compete against Indonesia Tontowi Ahmad and Liliyana Natsir during their mixed doubles semifinal match at the Badminton World Federation championships at Istora Stadium in Jakarta, Indonesia on Saturday
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