According to Xicai.com's inquiry, no matter which bank you hold the credit card, the credit limit of this card will be automatically restored to the fixed limit before you applied for the temporary limit after the temporary limit expires, no matter whether the temporary limit you applied for is used up or not. Therefore, there is no way to extend the temporary credit line after it expires.

Any special card that can provide credit certificate for the cardholder so that the cardholder can shop, spend or enjoy specific services can be called credit card, including credit card, quasi-credit card, debit card, savings card, ATM card, check card and credit card.