They do NOT CARE what they'd look like.
They expect this to be the Chinese century if not millenium. They think they are overdue to rule the world. They expect to take over Australia--which has so much needed land for their people.
They do not care if they are merely survivors on top of a nuclear heap. They figure they will have more people and material with which to rule what's left.
If they tried that, would they REALLY be prepared to have the ENTIRE Western world defending Australia? Even France and Germany. Not that they matter that much...