A combo photo shows a ceremony marking the retirement of six badminton players from the national team on the sidelines of the China Open badminton event in Shanghai, November 23, 2008. (Bottom from left) Two-time Olympic champion Zhang Ning, two-time Olympic mixed doubles champion Gao Ling, Olympic doubles champions Yang Wei and Zhang Jiewen, world champions Wei Yili and Chen Yu. Above are Zhang Ning, Gao Ling, Yang Wei and Zhang Jiewen. [Xinhua]