The file photo shows Wu Jingyu (R) from Jiangxi Province fights her opponent during the final of women's 51 kg division of the 2008 National Taekwondo Championships in Yantai, east China's Shandong Province, March 16, 2008. [Xinhua]

Wu, the first gold medalist for China's taekwondo in the Asian Games in 2006 and the world champion in 2007, has become a defender from a challenger in the event.

China named 639 athletes to contest 38 disciplines of all 28 sports for the Beijing Olympics in a low-profile ceremony last Friday.

Those uprising stars among the Chinese delegation attracted much attention as they are also medalist hopefuls in this Olympics.