After arriving in Australia, apply for a local bank card. It is more convenient to use the local bank card for daily consumption, because credit cards cannot be swiped in some places. Australia's ASB and ANZ banks are both good. In China, go to Bank of China to apply for a Great Wall card (credit card), which has a main card and a supplementary card. Let your family use the main card at home, and you can use the secondary card when you go abroad. Your family can deposit money into the main card at any time, and you can use the secondary card to make purchases. It is very convenient. You can use the Great Wall card to pay tuition.