Teaching "assistants" in China are a joke. This is a useless and superfluous job that should have been abolished long ago.

Food for Turnoi's crocodiles then

I disagree with no buts about it- it is my opinion and the only reasonable opinion possible. There are many classes which need the firm hand of a good TA to control. The FT should remain aloof from arguing the toss with students. In some circumstances the FT can exact control himself.....I will amend that, in fact an FT could nearly always get control, but only if he wants to become unpopular. I gather you didn't get along with your TA's too well, and I hope this wasn't because of bad attitude on your part? if you don't want a TA go to a nice Training Centre.