Banks have at least two credit systems. The first is the personal credit information system of China People's Bank, which records your credit card usage in detail, whether there is a loan, repayment credit, repayment amount, income and so on. Another system can check the basic salary of your social security payment registration and score your credit. But every time you check your personal credit, the system will record why you were checked. It doesn't seem good to check too many times.