Hello, when you check into a hotel or rent a car, the merchant can withhold a certain amount as a deposit by swiping the card, and then swipe the card after the consumption is completed. This kind of transaction is generally called pre-authorization transaction. Pre-authorized withholding amount occupies available credit card limit. After the pre-authorization is completed, the excess available credit line can be recovered immediately.

(You can consult any credit card service information of China Merchants Bank online through QQ or WeChat. Method 1: Search 4008205555 among QQ corporate friends, and add China Merchants Bank Credit Card Center as a friend; Method 2: Search "cmb4008205555" on WeChat, and pay attention to China Merchants Bank Credit Card Center. )