 Cheung is a master in Tai Chi and was one of the three assassins who attacked Kuen's father in prison fifteen years ago.His supposed reform was a lie to appease his daughter and lure out who killed the other two Fellow Association leaders.In order to take back control of the Walled City he plans a fake truce gathering to blow up Kuen, Fung and everyone associated with the Walled City Welfare Association and in the end kills Siu Chi.