You need your ID card to apply for a credit card, and you can't give it to others casually. If you overdraw a credit card and don't pay off the overdrawn amount in time, your credit standing will be low.

when using a credit card, you should pay attention to repaying the current bill amount on time. Don't swipe your card frequently at an integer multiple of 1 or 1. The swiping time should be within the business hours of the merchant as far as possible. If you swipe your card frequently in the early morning, it will trigger the risk control system, and the bills will be diversified. Don't swipe your card frequently in one place.