While combing over old posts I came across the very first one I had posted a couple of years back. I think there are some corrections that are needed to be made as I was inexperienced with the visa process.

This pretend "school" that is Yinchuan Cambridge owned by one of the most wicked crooks in china who calls himself John Zhong (Chinese name Zhang Yu) never actually got me a Z Visa. What I thought was the Z was actually the Resident Permit, which they managed to obtain in the province of Ningxia without actually going throught the process of the Z Visa first. With the Resident Permit put in the Passport you can go ahead and apply for the Foreign Expert Certificate. This is the roundabout way that this place does business. From what i've heard they are still unsuccessful at getting and keeping Native English Speakers, serves them right.

Though a Z visa can be issued by the PSB of provincial capitals,said Z does not state employment shall be had only in one town or one city.I'm puzzled.
I thought a Z visa is the visa you need if you enter China to work.It is superceded by the Residence Permit,which specifies your school/employer,and where you are staying,ie your address.
Some provinces in China have PSB's based in their capitals who chose to issue backdated Z visas to louwai that have entered China on L's,and have subsequently found employment.I've had that done before.Contrary to what has been written about this,it's NOT ILLEGAL!
But if you've got an L issued from within China by a local PSB office,that kind of L visa is not able to be 'converted' to a Z inside China.
If you've that kind of L visa you can do a visa run to HK or Ulaanbator(cheaper) or any other neighbouring foreign country to get a Z,and then re-enter.According to a good recruiter I know well,having to return to your homeland to effect said change is no longer necessary for louwai with L's in China who have got letters of invitation from employers.It seems some restrictions that were introduced duoring 'one dream year' have since been lifted.