Why has this evolved to a semi-racist/thinly veiled racist rant? It's just simple: Man gets really pissed over being harassed, finds the wrong person, extracts revenge. However unfortunate the incident is, this is nothing to do with 'Chinese values' or 'Chinese personalities'. I'm sorry for the events, and yes you should report it to the police, but I really hope that you put away your extremely wrong perceptions about the Chinese.
Oh, and I don't care whether he's Japanese/Vietnamese/whatever Asian. Your views are misguided and incorrect.