If you are a foreigner china is just not a right place for you. Chinese are really racist. They threw me out of dalian medical university dalian north east china. If you want to contact me regarding china issue and life there as english teacher or something your welcome. My email is santosh.valipe@gmail.com
It is like really tough life in china. Think twice before you head on into that strange land.

do it ! the Chinese are delightful. I just returned from a month-long Mandarin course in Beijing, and it was the best thing I've ever done. For a month of daily language classes (3 hours/day, class of 6 students), it cost about $240. This is ridiculously cheap by U.S. standards, but was the going rate in Beijing. Getting a travel visa was simple, and I had no problems. You could easily eat at restaurants 3 meals/day and spend about $5/day. Good luck, and enjoy.

I don't think it would be possible unless you have a Chinese business partner. I looked into that before, as well as on another business venture, but I gave up on this idea...

If you are NON CHINESE you CANNOT set up your own company. ALL foreign investment here MUST be a joint venture with a Chinese person or corporation etc. SORRY!!