[Soundy]

So let's break it down: you have a life here, you have a decent job with chance for advancement, you have a girl... and you want to know if you should blow it all up to go halfway around the world to a job that's really no better, with a language you're iffy in, to work at a company that in all likelihood will die in under five years?

Let's be honest, you don't sound like the aggressive, driven, ruthless type that would be necessary to "save" this company. From the way you paint him, it's more likely your "evil uncle" would steamroll right over you to reach his goals (whatever they are) long before you even have the knowledge, experience, contacts, networking, and respect to be able to take over the company.

So that would leave you stuck in China, without the girl you would marry, without a job, without much of a resume, and quite possibly having been made the fall guy for your uncle's shenanigans...

I dunno, doesn't sound like a difficult choice to me. All that effort you would put into learning what you need to run that company, would probably be a lot better spent learning the people skills that would let you advance in your current company... because let's face it, without those skills, you won't be prepared for running your family's company either.