Inter-bank fund pooling is to transfer the money from your pooled account to the pooled account at any time or regularly or in fixed amounts. If your pooled card has a credit card bound to it and needs to return the credit card regularly, because it is The money on the pooled card is likely to be pooled (I don’t know how you set up the inter-bank fund pooling), causing the credit card to become overdue. Therefore, on the repayment date, you need to ensure that there is sufficient money in the debit card bound to the credit card to prepare for the credit card repayment.