Actually, what you have described could be just about true of any college or university in China. I too was physically threatened outside my classroom by another foreign teacher with very dubious qualifications, who had a long history of physically threatening other people. I weighed up the options to deal with the situation, both at the time and afterwards. Clearly telling the university would achieve nothing; it would only serve to blacken my name. If I had fought him and won, it would be I who would be looked upon as violent and not had my contract renewed, despite defending myself from an obvious assault. If I had actually been assaulted I doubt the judicial process would protect me.

In the end, I was advised to ask the university subtly if he was a Manager, because he seemed to be dictating what I should do and how I should behave. This turned out to be well thought out advice. The university, as predicted by my Chinese advisor, got more upset when they thought he was trying to manage staff above the heads of the actual Heads of the university. It was this that irked the university more than anything and he wasn't asked to return the following term.