Foreign Expert with Working permit need to switch to permanent permit ?

I was Head of Sciences and technology department in one EU Embassy for 2 Years, 2 Year Foreign Expert in China in sciences & techbology. i am Also Professor Level at EU Universty .I did many contribution in sciences among very good univerties in research center in China. Almost 5 year now in China and wondering if my case is valid for permanent residence. Actually I have working visa till 2016 with Foreign Expert certificate.
As It will save my time and energy and focus on real work and future perspective. I am also with Chinese gf with perspective to get married but i dont want that to be the only solution.

Thanks for your reply.