China's two-time Olympic champion Zhang Ning (L) embraces head coach Li Yongbo as she receives an award during a ceremony to mark her retirement with five other teammates from the national badminton team on the sidelines of the China Open badminton event in Shanghai, November 23, 2008. The 33-year-old veteran, who won gold in Athens and Beijing, has become the coach of the national women's team. [Xinhua]