Hello, if you use China Merchants Bank credit card, there are two basic credit card limits in Hong Kong and Macao, namely UnionPay line and international line (VISA, MASTERCARD, JCB and American Express). Swipe your card on UnionPay online and settle directly in RMB; If you swipe your card on an international line, it will be settled in US dollars. Since the consumption other than credit card will be settled in US dollars, if the consumption amount is not US dollars, there will be an exchange fee between the two currencies, that is, 0.5% of the transaction amount of 65438+. If the consumption amount is USD, no settlement fee will be charged. When spending, you can ask the merchant if there is a UnionPay credit card limit, which is convenient for you to choose. If you have any other questions, it is suggested to add "QQ" or "WeChat" to experience the function of the "micro-customer service" platform of the credit card, or telephone manual service consultation. Method 1: Search for "4008205555" among QQ corporate friends and add "China Merchants Bank Credit Card Center" as a friend; Or WeChat search for "cmb4008205555" and pay attention to China Merchants Bank Credit Card Center. Method 2: Please call the credit card customer service hotline 8008205555 (fixed telephone only) or 4008205555. The cardholder should directly enter the ID number and inquiry password-then select "9" to enter the manual service. Thank you for your attention and support!