Retiree Residency

Hello,

I am a recent retiree from a major oil company. I have a steady income that will last for the rest of my life. I have intentions to come to China to seek and marry a Chinese woman and possibly reside in China, or the US, after our marriage. Can you tell me if this is permitted and the steps that I wold have to take to accomplish this goal?

Also, I have been teaching electronics at a private college here in the US part time for 6 years and I might want to continue teaching if China has similar technical schools.

Thank you for your help.