Regarding the pre-authorization of the Bank of Communications credit card, I used it to swipe 500 yuan when I was staying in a hotel, and received a short message saying that the Bank of Communications credit card pre-authorized me to spend money in 500 yuan. Hello, dear, this is the first time to pre-authorize 500 yuan (referring to the hotel deposit). When checking out, the hotel completed the pre-authorization, which is the actual consumption amount. For example, if you actually spend 300 yuan, it will be credited to your bank card two days later, and 200 yuan will restore your quota. Since you will not spend money from your credit card after pre-authorization, there will be no short message and you can use it in 2 days.