but people who actually care about their career should not hesitate to stand up for it and to do the best to put themselves in the position they want to be in. If you are a good teacher, and you have put yourself in a position where your skills should be valued, than you should fight for the treatment you deserve.

But in many cases those who are judging your teaching ability are Chinese staff who onashamedly speak Chinglish. THEY AREN'T QUALIFIED TO JUDGE US!
As for putting yourself in a position where your skills should be valued, that's difficult to do. I've witnessed 'good teachers' being fired for fighting for the treatment they deserve, while 'bad teachers' who didn't rock the boat were kept on.
Teaching in China is often a farce, too many students in a class, and most of them prefer to be entertained. If you're not an entertainer, you'll be on your way when your contract's up. Given the above scenario, what's the point in trying to be a model teacher? Pretend to do the job well, and shut up about injustices. It's an even better deal if you slacken off, and just what those stuck-up Chinese directors deserve!