Short selling means that 90% or more of the credit limit of a credit card has been used. There is also an empty card repayment, that is, when the available credit card amount is lower than 10%, repayment can be made, which is short card repayment. There is nothing wrong with the empty credit card itself, but it will be suspected of cashing out if it is empty for a long time. In this case, you are easily controlled by bank risks.
Then when you use a credit card, the maximum credit limit can reach about 80% of the credit limit of the credit card, which can also avoid risk control and help to increase the credit limit.