This takes a lot of pressure of since quality is not has strict in the Chinese market, and there is not that many people who have 10+ years experience in CS things. So if you show up with a "let-get-shit-done" attitude, or just a sense of quality, you will be well rewarded.
You can also work on scales that are normally only something for the best and brightest in SF etc. Making day to day task be more challenging and fun.
On the social side, its fun to be an expat, everyone and their grandmother wants to ask you questions and you get a extended family with other expats in no time. The social pressure from home goes away and you hang out with people from all walks of life, on the other side of the world we are all just guests.
China worked great for me, but there is other new crazy markets like Vietnam, Indonesia, Burma. Where a middle class are starting to use their smartphones more and more. All these countries needs localized versions of basic apps, or as in the case of China, niche version of basic apps.
I remember when I was stuck in traffic on the highway back home from work, before China, and thinking if this is it. A change of scenery was all I needed. If you do what you love and it still doesn't feel right, my bet is that you are in the wrong place.
Good luck.