There is no need to go to the business hall to increase the personal credit limit of CCB's credit card. Call the credit card customer service center directly to apply for increasing the personal credit limit of the credit card. As for whether your deposit in CCB is helpful or not, it depends on the time and method of your deposit. Generally speaking, credit card issuers' time deposits and financial management certificates are helpful to increase the credit limit, but it also depends on the time, at least 1 month, and some of them take half a year. Your deposit account in CCB must be re-credited. It should be helpful to call the customer service of the credit card or directly ask the deposit manager of the bank to withdraw money.