1. First, you can apply through ICBC business outlets, ATMs, and online banking. You can bring your personal ID and credit card to the ICBC business outlets to add an ICBC credit card repayment account.

2. Secondly, you can call the ICBC credit card customer service hotline 400895588, and then transfer to manual service to add the ICBC credit card repayment account.

3. Finally, you can log in to the official website of ICBC, and then follow the prompts to fill in the ICBC credit card repayment account to add it.