What can I do to get visa again cause I overstayed china for almost one year after loosing passport

I lost my passport in PRC 2008 Feb and I was caught and detained in Nov 2008 to Dec 2008.since then I have never gone to PRC again.right now I want to go and buy building material from foshan so what is the best way to do and get at least 30 days entry permit.i overstayed be use I had no money to extend my entry permit but now am a big businessman in Kenya.