PeopleChina's anti-graft crackdown widens as third former COSL chief executive investigatedYuan Guangyu is under investigation for alleged disciplinary and legal violationsYuan Guangyu, Li Yong and Qi Meisheng (from left to right).Photo: RUETERS/SCANPIX/XU YIHE/UPSTREAMXu YiheAsia CorrespondentSingapore