working in china

hello there!
i need some advice:
for more than a year now i’ve been working as a designer at a company that develops accessories for the fashion industry. recently i got an offer from another company to work as a designer/buyer/agent/representative/whatever in china.
could anyone give me an advice as for what should i ask/take concern of before i go into this episode?
the salary is something i also don’t have a clue about - how much is the common?
and what about the social conditions?
i don’t really know that many people in this industry and would really appreciate some help…
thanks in advance

already answered this post in another section.