It cannot be handled directly in China. Banks in Canada generally only accept credit card applications from people with Canadian citizenship or residency or registered international students. It is not possible in China now, because cross-border mail or online application is generally not accepted when applying. In addition, Canada does not have any banks or offices in China at present, so it is illegal to promote any credit card business in China.

If you plan to study in Canada, you can first apply for dual-currency credit cards from banks such as Bank of China and China Merchants Bank in China (parents can apply for a main card and a supplementary card for you, because students can't directly apply for a main card for themselves). In Canada, you can spend directly by credit card, and the repayment can be repaid by domestic parents. After you register in a Canadian university, you open an account in a local bank and apply for a credit card for students.