China's Zheng/Huang to defend mixed doubles title at badminton worlds final

China's Zheng Siwei (R)/Huang Yaqiong compete during the mixed doubles final match against Thailand's Dechapol Puavaranukroh/Sapsiree Taerattanachai at the BWF Badminton World Championships 2019 in Basel, Switzerland, Aug. 25, 2019. (Xinhua/Li Jundong)