As much as hardly anyone in Australia seems to want to admit it we need China and in a very big way, it's not just Twiggy. Although Wikipedia isn't the most reliable source
https://en.wikipedia.org/wiki/List_of_the_largest_trading_partners_of_Australia there are plenty of other places to see China buys the overwhelming majority of our exports. They saved us in the GFC and they are keeping us afloat now.
Should we bow to everything on their agenda certainly not. Should we follow Trump in picking a fight with them now for his political purposes, I for one definitely don't think so.
Twiggy likes to make a show of his philanthropy which I am not a huge fan of, but far better he do than than sit on everything and not contribute at all, I'm sure there is plenty of strategy in how he "gives" and it's not from a completely selfless basis. Having said this if he maintains relationships with the Chinese that gets the country things it needs surely that's a good thing regardless of what the motives are.