The security clause refers to the entrusted deduction power of attorney and personal repayment guarantee signed by the borrower and the lender. The former authorizes the bank to deduct the loan principal and interest from the borrower's account, and the latter indicates that the borrower is willing to pay off the loan principal and interest on time. "Two cards" refer to credit cards and savings cards respectively, that is, you need to handle these two bank cards at the same time when handling this business. Through real-name authentication, mortgage guarantee and other means, this business can provide customers with a certain amount of low-interest consumer credit services, which is flexible, convenient and fast in lending.