foreign teachers have no power in china
They have the power to take one "lucky" girl (or boy) back with them to their home country to gain foreign citizenship.
That's a pretty big power over a lot of people here.
To add a bit to what I said earlier (perhaps as a verification or proof of point) I just now saw this ad on echinacities, copy/paste for your reference:
ASSISTANT FEMALE WANTED BY AMERICAN TALENT SCOUT FOR FILMS/MODELLING, GUANGZHOU
Job Description:
I M A WHITE HANDSOME AMERICAN TALENT SCOUT IN THE FILM/MODELLING FIELD....
I WANT A FEMALE ASSISTANT...PAY ....INITIALLY 5.000 RMB PER MONTH..
PLUS THE REAL POSSIBILITY OF COMING TO LIVE IN USA ..WITH ME ...
NATURALLY
CALL ME ...FRANK
Oh, I think we could definitely call him "frank". That was my point originally when I said that a "power" one could hold over a local person (or at least some foreigners like to think) is the ability to take them back to their home country. Personally, anyone who writes a public ad like this sounds like either a dateless loser, or just a scumbag in general, but that is besides the point.