It is great advice. Chinese and some other Asians have a herd mentality, but when you confront them and stand your ground they don't know what to do.

Basically the best thing to do is to pick out the "leader" of the pack and publicly humiliate that person and cause them to lose face. The followers will soon back off. [edited]

I'm against foreigners like you who are confrontational to the Chinese in China. Retribution will probably occur as a result of a foreigner daring to make the leader of the pack lose face. Though you've won a round of the fight convincingly, you'll end up losing the fight unanimously on points by being ostracized as a troublemaker by the whole pack during the rest of your time as an employee there. I think it's much wiser to avoid confrontation by sweeping an injustice perpetrated by one of the pack against you under the rug.