Why do you continue to work at a place that does that to you? Not every job is like that. I don't think it's difficult to work at my job, although I have to plan the lessons myself, which was difficult for me at first. They don't really change things, although sometimes I don't have classes and the forget to tell me, but there are no surprise extra classes or anything like that. No office hours, no meetings, it's actually pretty easy. Nothing really changes here.

From this question, and from other things you have said, maybe it is time for you take a break from China, or at least from your job. You seem quite bitter. Are you going home this summer?

Are you seeking psychiatric help because I'm not sure there are professional psychiatrists here. It would probably be better to seek professional help from said Hospital in your local town after all you are a national here Yian! You know more about getting benefits in China than I would since you were born here.