Your domestic flight fleeing your current school in China where you already have an FEC and residence permit indicates you obviously would not require a Z visa if another school in China is foolish enough to hire you. Your release papers and copies of your existing FEC and residence permit, already in the national system, are used to reissue the new province's documents for your school and employment.

You are a twister and warper; I never indicated I was fleeing a school; in fact I said quite clearly in the post you responded to that I needed to return and finish my contract. Having said that there could be some streetwise dodgy stuff that you are better versed in in China; including border-runs, and cheap seedy hotels in HK.