You could be right to call them money-grabbing but that is all right by me because unlike my previous Western Employers who used to squeeze every penny out of the loved ones of the Dearly Departed, these current money-grabbers actually pass on to me a decent wedge of their ill-gotten gains by way of 12000 RMB plus a flat; so, what do I care?

So, you were earning more in China for a dead end job than in the U.K? That means that you are probably not one of life's winners.

Sure, money can stretch out further in China, but even minimum wage people in the west tend to earn more than most teachers in China.
Teachers don't really come to China for money, but for the lifestyle. If you want money, go to the Middle-East, lol.