Last year marked the first time Australia referred China to the World Trade Organization during a trade war between the two nations, which has largely been seen as a response to Australia's calls for an independent investigation into the origins of COVID-19.
The announcement that Australia would be advocating for such an inquiry was made by Foreign Minister Marise Payne in an interview on Insiders — Prime Minister Scott Morrison doubled down on the new policy days later, saying the World Health Organization needed "weapons inspector" powers to investigate the pandemic.
China viewed Australia's suggestion as an insult: Beijing had been growing increasingly sensitive about the perception that it was to blame for the virus, which was first detected in the city of Wuhan.
Chinese officials have even gone so far as to put forward a conspiracy theory that the virus may have come from the United States
Is there any reason why China should have this aggressive reaction to any independent investigation?