Because the temporary line is actually just a credit line given by the bank at a certain period of time, and the installment payment is divided into at least three installments. If the temporary quota can be phased, it will increase the risk of banks, so most banks will not open temporary quotas in stages.

In addition, I would also like to remind you that when the temporary limit expires, if you use this temporary limit, the amount owed in your card will exceed the fixed limit, thus exceeding the limit. Although CCB does not charge the overrun fee, all the overrun amount will be counted into the minimum repayment amount, and you need to pay it back.