Chen Qingchen (left) and Jia Yifan of China compete during the third round of the women’s doubles at the BWF World Championships against Treesa Jolly and Gayatri Gopichand Pullela of India (not in the picture) at Copenhagen on Thursday.

Chen Qingchen (left) and Jia Yifan of China compete during the third round of the women's doubles at the BWF World Championships against Treesa Jolly and Gayatri Gopichand Pullela of India (not in the picture) at Copenhagen on Thursday.