In response to advice needed (AussieJay)

The question is, is
if I go home and reapply from fresh is the fact I left going to show up on any database.

I don't know.
Your tentative plan is to fail to honor your first contract because your are "sick of it".
The "position elsewhere" that you've "accepted" will not receive your release letter so they cannot hire you.
With your new passport you hope to find another employer that you can deceive.
If you are fortunate one of the other Australian FTs that litter this site will help you game the "corrupt Chinese" system so that you can return and continue to provide your students a virtual display of virtuous Western culture.