China's Zheng Siwei (R)/Huang Yaqiong compete during the mixed doubles quarterfinal match against Japan's Yuki Kaneko /Misaki Matsutomo at China Open 2019 badminton tournament in Changzhou, east China's Jiangsu Province, Sept. 20, 2019. (Photos: Xinhua)

Japan's Yuki Kaneko (Top)/Misaki Matsutomo compete during the mixed doubles quarterfinal match against China's Zheng Siwei/Huang Yaqiong at China Open 2019 badminton tournament in Changzhou, east China's Jiangsu Province, Sept. 20, 2019.

Japan's Yuki Kaneko (L)/Misaki Matsutomo react during the mixed doubles quarterfinal match against China's Zheng Siwei/Huang Yaqiong at China Open 2019 badminton tournament in Changzhou, east China's Jiangsu Province, Sept. 20, 2019.

Japan's Yuki Kaneko (2nd R)/Misaki Matsutomo compete during the mixed doubles quarterfinal match against China's Zheng Siwei/Huang Yaqiong at China Open 2019 badminton tournament in Changzhou, east China's Jiangsu Province, Sept. 20, 2019.

Japan's Yuki Kaneko (L)/Misaki Matsutomo compete during the mixed doubles quarterfinal match against China's Zheng Siwei/Huang Yaqiong at China Open 2019 badminton tournament in Changzhou, east China's Jiangsu Province, Sept. 20, 2019.

China's Wang Yilyu (L)/Huang Dongping compete during the mixed doubles quarter final match against Indonesia's Tontowi Ahmad/Winny Oktavina Kandow at China Open 2019 badminton tournament in Changzhou, east China's Jiangsu Province, Sept. 20, 2019.

Indonesia's Tontowi Ahmad/Winny Oktavina Kandow (front) compete during the mixed doubles quarter final match against China's Wang Yilyu/Huang Dongping at China Open 2019 badminton tournament in Changzhou, east China's Jiangsu Province, Sept. 20, 2019.

Indonesia's Tontowi Ahmad (R)/Winny Oktavina Kandow compete during the mixed doubles quarter final match against China's Wang Yilyu/Huang Dongping at China Open 2019 badminton tournament in Changzhou, east China's Jiangsu Province, Sept. 20, 2019.

China's Wang Yilyu (L)/Huang Dongping compete during the mixed doubles quarter final match against Indonesia's Tontowi Ahmad/Winny Oktavina Kandow at China Open 2019 badminton tournament in Changzhou, east China's Jiangsu Province, Sept. 20, 2019.