Oof, that's gotta sting
Also:
Lol seek confirmation. Did ScoMo think if he called up Xi he's going to say "oh sorry bro it's just a misunderstanding".
More over, this is isn't just China giving Australia some pain for them acting like a clown on the world stage on US order. This is actually a lot more strategic than that. Xi is going on the offensive here against the Quad and Five Eyes. US is too big of a target to attack frontally so instead he's going after all the little guys. Consider the following:
Japan & South Korea - Suga and Moon are the most China literately of the bunch and can see which way the wind is blowing. They just blew Pompeo off a few days ago at the quad meeting in Japan and both seem keen on sighing RCEP, so these two get a pass for now.
India - stuck in a quagmire of their own making at Ladakh. PLA is sticking to them like glue and slowing bleeding them out
New Zealand - too small and irrelevant of a target, and they've mostly been keeping their head down, they get a pass for now
Canada - No CanSino vaccine for you, you want vaccine talk to your Southern neighbour. On wait, their J&J vaccine just failed today
UK - these guys don't really need help, they are already digging their own grave with COVID-19 and no deal BREXIT
So that leaves
Australia. Xi have already laid out the pain earlier with the barley inspection and wine inspection and so on, now he's bringing out the big guns.
You see all the little guys who work for the boss man that is US want some compensation for economic damage they suffer while taking US's side in Cold War 2.0. But of course we all know Trump doesn't even pay his employees properly, he's never going to throw them a bone. In fact after the barley thing with Australia China ended up buying more barley from US instead, since they needed to buy something to fulfil phase 1 obligations and US isn't producing much else with COVID-19 going on. Imagine how you would feel if you're an Australian barley farmer seeing China buying barley from US instead while your prime minister is out there yelling "we should investigate Wuhan!"
So by attacking the little guys in general and Australia in particular Xi is weakening the two alliances with China's powerful economic weapon. It sends a clear message to anyone else who might be thinking of taking US side that such actions is going to hit in where it hurts the most - in their wallet.