China's He Bingjiao defeated Olympic champion and compatriot Chen Yufei 2-0 to claim the women's singles title, while Chen Qingchen and Jia Yifan won the women's doubles title at BWF German Open here on Sunday.28-year-old Ou and Olympic men's doubles silver winner Liu Yuchen were edged by Malaysian duo Goh Sze Fei and Nur Izzuddin 23-21, 16-21, 21-14 in the men's final.