Generally, you go to an intermediary to apply for a visa. The intermediary usually collects cash or checks or swipes the card directly at the intermediary's office. Even if you apply for a visa in Australia, you only need to fill in the credit card number in the application form, without providing a copy.

even if you need to provide a copy, it is proof, because it is very important to have three numbers on the back of the card (the back of the credit card has 16 numbers and the last four numbers, and there is a small white box with three numbers in it), so generally don't disclose it to others.

so please reconfirm with your agent why you want your credit card.

And when you apply for an Australian visa in China, the payment method is not only to pay directly at the Australian Consulate, but also to remit money by post office. I have never heard of any other payment method. The specific payment method can be found at the Australian Embassy in China. Baidu, have a look.

remember to be cautious about money.