Hello, landlord! The transaction password of China Merchants Bank's credit card is the password used when swiping the card at ordinary times. If the landlord wants to set the transaction password of China Merchants Bank credit card, there are two ways:

First, the landlord can choose to dial the credit card number of China Merchants Bank (printed on the back of the card), press 1 to enter the Chinese service, then press 4 to enter the cardholder service, then press 3 to enter the password setting, and then press 3 to enter the transaction password setting. After logging in according to the voice prompt, you can modify it yourself.

In addition, you can log in to "Credit Card Online Banking" from China Merchants Bank Credit Card official website (also printed on the back of the card), then enter "Account Management" in the upper left corner, then "Password Management", and then click "Transaction Password Settings" to modify it yourself.

The above two methods are feasible, I hope my answer will be helpful to the landlord!