Do we want a war in China?
No.
Do we need a war in China?
Not ideally .
Are we going to war with China?
Not our call.
China is suffering from a lot of problems, with protests from pensioners and mortgage holders, to drought and weakening economy. It has banged the war drum for domestic reasons and a war, if it starts, will be for internal political reasons, mainly to unite population.
China will lose more in a Sino Australian war with loss in food, energy and resources that it needs.