We made sure we didn't register little miss N in anything until we got her Oz citizenship. YOu have to be careful about that. That way, Little Miss N was nothing but Oz from birth, there was no argument, no need to revoke, no troubles or issues at all. Once it was done at least.
Don't register your kid's birth as chinese at all. Ignore all and sundry efforts to do that, and ignore the law as it simply doesn't apply to you, no matter what they say. We had people visiting, officials and the like, but I ignored them. (when Mrs N was visibly pregnant the local doctor came around to make sure she was registered for a baby and did she want it or wanted an abortion. I simply threw her out of the house, and not politely either. Mrs N said that was bad, but I didn't give a shit. Nothing happened.)
Your baby is (insert country of your own origin here)
That's what we did and it worked well.