China's Li Xuerui returns a shot to Chinese Taipei's Tai Tzu Ying during their women's singles match in the Uber Cup badminton championship in New Delhi May 21, 2014. Li Xuerui won 2-0. (Xinhua/Zheng Huansong)

Chinese Taipei's Tai Tzu Ying returns a shot to China's Li Xuerui during the women's singles match in the Uber Cup badminton championship in New Delhi May 21, 2014. Tai Tzu Ying lost 0-2. (Xinhua/Zheng Huansong)

Chinese Taipei's Tai Tzu Ying returns a shot to China's Li Xuerui during their women's singles match in the Uber Cup badminton championship in New Delhi May 21, 2014. Tai Tzu Ying lost 0-2. (Xinhua/Zheng Huansong)

China's Li Xuerui returns a shot to Chinese Taipei's Tai Tzu Ying during their women's singles match in the Uber Cup badminton championship in New Delhi May 21, 2014. Li Xuerui won 2-0. (Xinhua/Zheng Huansong)

China's Li Xuerui returns a shot to Chinese Taipei's Tai Tzu Ying during their women's singles match in the Uber Cup badminton championship in New Delhi May 21, 2014. Li Xuerui won 2-0. (Xinhua/Zheng Huansong)