China's star hurdler Liu Xiang (bottom C) and Tyson Gay (bottom L3) of USA pose for a group photo with fans one day before the IAAF Diamond League London Grand Prix at Crystal Palace stadium in south London, Britain, July 12, 2012. (Xinhua/Wang Zijiang)
China's star hurdler Liu Xiang smiles before an interview one day ahead of the IAAF Diamond League London Grand Prix at Crystal Palace stadium in south London, Britain, July 12, 2012. (Xinhua/Wang Zijiang)
China's star hurdler Liu Xiang answers questions during an interview one day before the IAAF Diamond League London Grand Prix at Crystal Palace stadium in south London, Britain, July 12, 2012. (Xinhua/Wang Zijiang)
