@ Liumingke1234, the OP also posted exactly the same question on echinacities 2 days after getting reasonable replies here. I directed him to this topic! ;-)

Best thing to be fully legal would be to set up your own WFOE (Wholly Owned Foreign Enterprise) but you'll need a minimum starting capital (Guangzhou is 200-300,000rmb, don't know about Kunming). You'll also need to get an office for the business address. You then emit yourself as owner, get Z visa & convert to work permit & residence visa.

I read that yesterday & to be honest thought it very plausible & something I wouldn't put past the American secret services to do based on their previous history of pulling stunts to try to have things their way.

@ Long-Dragon,
My apologies to you. I use a number of English language forums in China & you get a lot of visa/WP questions asked with responses from agents working for companies offering advice & then charging. I jumped to the wrong conclusion here.

Don't expect to get this advice for free. Sounds like Long-Dragon works for a visa agency/consultants.