BEIJING, Nov. 29 (Xinhua) -- Olympic mixed doubles badminton gold medalist Zheng Siwei of China announced Friday that he will retire from international competition and next month's BWF World Tour Finals in Hangzhou will be his "last dance."
"Many people expect me to play at least until the Los Angeles Olympics or even longer. Considering our competitiveness, we just won the Olympic gold and rank among the top in
