Get a job as a part-time english teacher. Most schools know how to get you a Z visa.
Work as few hours as you can.

23rd of july is pretty tight. Z-visas are a bitch.

Starting a company that would be capable of obtaining Z-visas is not easy, and certainly cannot be done in a month.

You have different options to set up your own company - make it a representative office of an already existing company (the fastest), set up a company in HK and then register a branch here (fast, but more costly), or set up a WFOE here in China (the option that gives you the most freedom, but also the slowest). Generally speaking, you're not allowed to generate any income with a rep office and won't be able to write any invoices in RMB.

There are a number of guides on the market, some free, some more expensive - get one of those at the Bookworm and look into these issues. You'll also have to check if you're allowed to invest capital in this area of business as a foreigner or if you need to have a Chinese partner. It's alright to do all this research on an F or L visa as long as you can prove you're in the process of setting up a firm here. Once you have your business license and appoint yourself as the Chief Representative, you should be able to change to a Z visa even without leaving China.

is there actually a difference ? i couln't really find any informations about setting up a hk branch office in china. setting up a hk company is not really complicated.

Setting up a HK company is really easy, just need you to create ur company an available name, and provide copy of your passport then ul get all documents back in 10-15days.

And setting up Representative office of your new HK company in Beijing takes long time n of course more documents, as long as u have all documents required ready, it can b done in one month.
For more information or need my help, feel free to contact me.

Regards,

Phyllis