A CHINESE man who beheaded and hacked a Canadian bus passenger to pieces has been found not guilty of murder on mental grounds. Vince Weiguang Li, 40, who had been charged with murdering 22-year-old Tim McLean on a Canadian Greyhound bus on July 30, 2008, has been diagnosed with paranoid schizophrenia. Li had repeatedly stabbed Mr McLean, who had been asleep on the seat next to him, sawn off his head, removed his internal organs, pocketed his nose, tongue and an ear, and taunted police and bystanders with the severed head. Police said in court documents Li "appeared to smell,...