if it is a CMB credit card, our credit card * * * has two passwords, namely the inquiry password and the transaction password. 1. Password inquiry: the password used when calling our customer service hotline, online banking login and online payment at home and abroad; 2. Transaction password: corresponding to two functions: credit card password and cash advance. ① Card-swiping password function: currently, it is applicable to physical card-passing transactions of UnionPay lines at home and abroad, excluding non-card-passing transactions, such as card-pressing transactions, manual authorization transactions, telephone booking of air tickets, etc. ② Cash advance function: it is suitable for ATM to check credit card limit and ATM or bank counter to withdraw cash. Warm reminder: when you withdraw cash, there will be corresponding handling fees and interest, and there is also a limit on the amount.