Qiu Yike (R) and Wen Jia of China react during the first round of mixed doubles against Gencay Menge and Ipek Karahan of Turkey at Palais omnisport de Paris Bercy in Paris, France, on May 14, 2013. Qiu and Wen won 4-0. (Xinhua/Wang Lili)

Qiu Yike (L) and Wen Jia of China react after the first round of mixed doubles against Gencay Menge and Ipek Karahan of Turkey at Palais omnisport de Paris Bercy in Paris, France on May 14, 2013. Qiu and Wen won 4-0. (Xinhua/Wang Lili)

Chen Qi (L) and Hu Limei of China compete during the first round of mixed doubles against Pablo Tabachnik and Camila Arguelles of Argentina at Palais omnisport de Paris Bercy in Paris, France, on May 14, 2013. Chen and Hu won 4-0. (Xinhua/Wang Lili)

Qiu Yike (R) and Wen Jia of China compete during the first round of mixed doubles against Gencay Menge and Ipek Karahan of Turkey at Palais omnisport de Paris Bercy in Paris, France, on May 14, 2013. Qiu and Wen won 4-0. (Xinhua/Tao Xiyi)

Qiu Yike (R) and Wen Jia of China compete during the first round of mixed doubles against Gencay Menge and Ipek Karahan of Turkey at Palais omnisport de Paris Bercy in Paris, France, on May 14, 2013. Qiu and Wen won 4-0. (Xinhua/Tao Xiyi)

Wang Liqin (R) and Rao Jingwen of China react after the first round of mixed doubles against Thavisack Phathaphone and Thiphakone Southammavong of Laos at Palais omnisport de Paris Bercy in Paris, France, on May 14, 2013. Wang and Rao won 4-0. (Xinhua/Wang Lili)

Chen Qi (L) and Hu Limei of China compete during the first round of mixed doubles against Pablo Tabachnik and Camila Arguelles of Argentina at Palais omnisport de Paris Bercy in Paris, France, on May 14, 2013. Chen and Hu won 4-0. (Xinhua/Wang Lili)

Rao Jingwen (L) of China helps her partner Wang Liqin take off his number bib after the first round of mixed doubles against Thavisack Phathaphone and Thiphakone Southammavong of Laos at Palais omnisport de Paris Bercy in Paris, France, on May 14, 2013. Wang and Rao won 4-0. (Xinhua/Wang Lili)

Rao Jingwen (R) of China helps her partner Wang Liqin take off his number bib after the first round of mixed doubles against Thavisack Phathaphone and Thiphakone Southammavong of Laos at Palais omnisport de Paris Bercy in Paris, France, on May 14, 2013. Wang and Rao won 4-0. (Xinhua/Tao Xiyi)

Wang Liqin (L) and Rao Jingwen of China react during the first round of mixed doubles against Thavisack Phathaphone and Thiphakone Southammavong of Laos at Palais omnisport de Paris Bercy in Paris, France, on May 14, 2013. Wang and Rao won 4-0. (Xinhua/Tao Xiyi)

Wang Liqin (L) and Rao Jingwen of China compete during the first round of mixed doubles against Thavisack Phathaphone and Thiphakone Southammavong of Laos at Palais omnisport de Paris Bercy in Paris, France, on May 14, 2013. Wang and Rao won 4-0. (Xinhua/Tao Xiyi)

Wang Liqin (L) and Rao Jingwen of China communicate during the first round of mixed doubles against Thavisack Phathaphone and Thiphakone Southammavong of Laos at Palais omnisport de Paris Bercy in Paris, France, on May 14, 2013. Wang and Rao won 4-0. (Xinhua/Tao Xiyi)

Wang Liqin (front) and Rao Jingwen of China compete during the first round of mixed doubles against Thavisack Phathaphone and Thiphakone Southammavong of Laos at Palais omnisport de Paris Bercy in Paris, France, on May 14, 2013. Wang and Rao won 4-0. (Xinhua/Tao Xiyi)

  Chen Qi (L) and Hu Limei of China compete during the first round of mixed doubles against Pablo Tabachnik and Camila Arguelles of Argentina at Palais omnisport de Paris Bercy in Paris, France, on May 14, 2013. Chen and Hu won 4-0. (Xinhua/Wang Lili)

Chen Qi (L) and Hu Limei of China compete during the first round of mixed doubles against Pablo Tabachnik and Camila Arguelles of Argentina at Palais omnisport de Paris Bercy in Paris, France, on May 14, 2013. Chen and Hu won 4-0. (Xinhua/Wang Lili)  

Tang Peng (R) and Ng Wing Nam (L) of Hong Kong of China talk to their coach Li Jing during the first round of mixed doubles against Pierre-Luc Theriault and Luo Anqi of Canada at Palais omnisport de Paris Bercy in Paris, France, on May 14, 2013. Tang and Ng won 4-1. (Xinhua/Tao Xiyi)

 Tang Peng (R) and Ng Wing Nam of Hong Kong of China talk during the first round of mixed doubles against Pierre-Luc Theriault and Luo Anqi of Canada at Palais omnisport de Paris Bercy in Paris, France, on May 14, 2013. Tang and Ng won 4-1. (Xinhua/Tao Xiyi)  

Jiang Huajun (R) and Cheung Yuk of Hong Kong of China compete during the first round of mixed doubles against Michal Obeslo and Hana Matelova of the Czech Republic at Palais omnisport de Paris Bercy in Paris, France, on May 14, 2013. Jiang and Cheung won 4-0. (Xinhua/Tao Xiyi)

Kenji Matsudaira (L) and Misako Wakamiya of Japan compete during the first round of mixed doubles against John Cordue and Sarah Her-Lee of New Zealand at Palais omnisport de Paris Bercy in Paris, France, on May 14, 2013. Kenji Matsudaira and Misako Wakamiya won 4-0. (Xinhua/Tao Xiyi)

Kenji Matsudaira (Front) and Misako Wakamiya of Japan compete during the first round of mixed doubles against John Cordue and Sarah Her-Lee of New Zealand at Palais omnisport de Paris Bercy in Paris, France, on May 14, 2013. Kenji Matsudaira and Misako Wakamiya won 4-0. (Xinhua/Tao Xiyi)