I have separated from my wife 6 months, creditors inform me I have a debt of 8000 in Australia and I am living in china, I don't have the money to pay it, what should I do?

Were you not aware of this debt prior to moving to China? Is this a joint debt with your wife or your own debt? You can always contact them to see about working out a repayment plan that will fit into your budget. It may take you a long time to pay it off, but it can be done.