After Australia pushed for a WHO probe into the source of COVID-19 at the World Health Assembly in May, China responded by adding an 80.5 percent tariff — consisting of an anti-dumping tax rate of 73.6 percent and a countervailing subsidy margin of 6.9 percent — on Australian barley imports. Beijing also banned four Australian businesses from exporting beef to China, and said that it would ban Chinese tourists from visiting Australia and students from studying there. It also added anti-dumping taxes of 107.1 to 218.1 percent on Australian wine imports.