Xiang Liu of China in action/PHOTO/Randy Miyazaki SHANGHAI, China — Xiang Liu was in stunning form at the Samsung Diamond League Meet in Shanghai on Saturday night after the Chinese hurdler sizzled to a world-leading time to win the men’s 110m Hurdles. Liu, the 2004 Athens Olympic gold medallist, who is coming back from a series of injuries that barred him from defending his crown in Beijing,...