Chen Qingchen (top L) and Zheng Siwei (top R) of China compete against Chris Adcock (bottom R) and Gabrielle Adcock of England in the mixed doubles final at the Badminton World Federation's (BWF) Dubai World Superseries Finals badminton tournament in Dubai, the United Arab Emirates, Dec. 18, 2016. Chen and Zheng claimed the title with 2-0. (Xinhua/Li Zhen)