Jarrod Watt and Jasmine Tse sift through the facts of how China came to levy nearly three years of escalating official and unofficial trade bans on Australian exports after comments made by the Australian Prime Minister at the beginning of the pandemic in 2020. SCMP political economy reporter Kandy Wong reports on how one of Australia's oldest and most prestigious wine brands has made the pivot from the Barossa Valley to making wine in mainland China, and what obstacles still remain in the…