Liu Xiang(R), China's star hurdler, in a training session with his fellow trainee Xie Wenjun, Shanghai, April 10, 2009. Liu Xiang, recovering quickly, started his second public training after returning from a foot surgery and three months' rehabilitation in the United States. (Xinhua/Fan Jun)

Liu Xiang(R) listens to the instructions of his coach, Sun Haiping, in a training session, Shanghai, April 10, 2009. (Xinhua/Fan Jun)

Liu Xiang(R) takes an interview with the media during his training break, Shanghai, April 10, 2009.(Xinhua/Fan Jun)