As I said before I strongly recommend you find a school that is willing to provide you with a Z working visa BEFORE you leave your home country. This can be quite hard to find but it's the only safe (and legal) option when it comes to teaching in China. Without Email Database this, schools can do whatever they want after you arrive and you'll really have no choice but to accept it or to try to find another school. Make no mistake schools will absolutely lie to you about getting you a Z working visa then claim there has been a new policy recently implemented that prevents them from fulfilling their promise.
Be safe, and get the visa first. If you find a good looking job with Email Database the catch that they will only provide you with an F business visa should you take it? If you Email Database have the chance to get a Z working visa than take it, but if you can't and you want to work in China anyway I'd say it's worth the risk to work on a business visa because usually even in the rare case you are caught, the police will just force you to stop working for the school.
If you ever find the need to get your own business visa the easiest way to do it is to go to a company called Forever Bright Trading Limited in Hong Kong. This company will provide you a business visa in a few hours without the need for any of the usually required Email Database documents. You simply need to fill out an application and pay a bit of money. Their website can be found here. Final Thoughts Finding a job to work in another country can be an intimidating thing full of many unknowns and confusion but I hope this article does a good job of preparing you for what to expect.