Options to stay a bit longer here, maybe set up a company and sponsor myself?

Hi, I am Sebastian from Latin America. Have been two months in Shanghai studying Chinese and just love this country, so would like to stay a bit more but getting some income as on student visa can't work...

It is true that it is not easy at all to get a work Z type (need sponsorship from a company and your permit is attached to them, although possible...) but... I wonder how easy or difficult it would be to set up a business and sponsor myself through the company, or how can I get a business M type that enables me to stay here for a while and get some income/start a business. In general, what options do I have?

I have lots of ideas but I am short of capital. What possibilities do I have? My X type expires in May so still have few months but just want to be planing my full year of the Monkey in China.

Thanks in advance!