What is the penalty for having more than one child after the one-child policy in china?

If the woman has one child there is no penalty! But if that woman has another child and doesn't have an abortion then she will be fined a lot of money (Even more than people earn there in a month!) But if the woman has twins first then she doesn't have a fine! But if a woman does get pregnant then she must have permission from the government somehow!

thanx 4 readin dis!!