and executives back in the US is key. Find a senior manager who can be your mentor and can support your career development. It is very important to treat the China assignment as part of your career advancement roadmap.
The mistakes most people make when going to work overseas are focusing mainly on $ and opportunities, there is nothing wrong with that. But if you do plan to return to the US ba<x>se, you need to treat the oversea job as a step stone for future "bigger and better" job back in US.