I don't quite understand what you mean. If you use China Merchants Bank's credit card, you can deposit, but it is not recommended. There is no interest on deposits, and there is a handling fee for taking them out. After withdrawing 8,000 yuan, only 2,000 yuan is available, and the deposit is 2,000 yuan, and the available amount is restored to 4,000 yuan, which is equivalent to paying off the bill of 6,000 yuan.