Olympic mixed doubles badminton gold medallist Zheng Siwei of China announced on 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 ranked among the top in the world rankings. As for why I suddenly stopped playing, my answer is, this is my life plan," the 27-year-old wrote on the Chinese social media platform Weibo.