Liu Xiang (simplified Chinese: 刘翔; traditional Chinese: 劉翔; pinyin: Liú Xiáng; born July 13, 1983) is a Chinese former 110 meter hurdler. Liu is an Olympic Gold medalist and World Champion. His 2004 Olympic gold medal was the first in a men's track and field event for China. Liu is one of China's most successful athletes and has emerged as a cultural icon. On top of being the only male athlete in history to be all of 110-metre hurdles World Record Holder, World Champion and Olympic Champion—Liu remains the Olympic record holder for the men's 110-metre hurdles with a time of 12.91 seconds he set back at the 2004 Athens Olympics. He was the favorite to win another gold in the 110 metre hurdles at the Beijing Olympics, but he had to withdraw from competition at the last moment after a false start and aggravation to a previously unrevealed injury. Again a gold medal favourite in the 110 metre hurdles at the London Olympics he pulled his Achilles tendon attempting to clear the first hurdle in the heats. On April 7, 2015, he announced his retirement on Sina Weibo. From Wikipedia
