Well, sadly as you said foreign bosses in China are the same crap. Most of them even come with that in mind: "OMG, it's paradise, a land of cheap slave trade, this is for me". I met a few of those. But they are easy to tell. The real danger are the friendly foreign bosses who sell you an idea of progress against the problems you mentioned with Chinese bosses, because at least with the them, after a while, you learn to expect that, and how to dodge and counter, but with the foreign "I understand you, I have been there and that's why my spirit of miss universe (I love everybody and want world peace) guided me into opening my own hole in the same shit". Is that hole any better? or are they here just because they couldn't succeed in their own homes?
Stay away from training centers, that's the only option I see...