Quasi-credit card appeared earlier than credit card, which can be said to be a trial version of credit card. Because the two cards belong to different accounts in the management department, and different credit cards, that is, the credit card is managed by the credit card center and the quasi-credit card is managed by the savings card center, it is generally impossible to combine the credit lines, and the credit lines of the two cards can be used separately without affecting each other (but if one card has bad credit, both cards may be downgraded or even stopped).