First of all, in view of your question, there will be a demand for cashing in a certain amount, and cashing in a credit card is illegal. If the card is overdrawn to a certain amount (it seems to be 5000 yuan), it will be sentenced to jail. At the same time, if the bank/credit card company finds out about handling the card, it will be recorded in the credit blacklist = you can't use some bank wealth management services, loans or mortgages in the future.

Secondly, from the operational point of view, the amount of liabilities for card maintenance is snowballing, and the liabilities of all cards will only increase rather than decrease. When this snowball rolls to the credit limit of a card, you will pay the price, so even if it is not found by the bank, it will not last long. It really doesn't make much sense, just send a handling fee to the cash-out service company. Therefore, raising a card with a card can only be a temporary emergency, not a long-term solution.