Does control mean that the card is frozen by CCB? Or was it reduced? If the bank takes the initiative to freeze your card, it may have noticed that your card is risky, such as being suspected of cashing out. It is possible that you often brush a large sum of money in one or several fixed merchants and then brush it again. This may be suspected of cashing out, but the general bank will first remind you by SMS or lower the limit. It is also possible that when you swipe your card, the number of times is limited. When you spend in a specified type of merchant, there may be a limit on the number of times or the amount, which is also to control risks. If this is the case, you can contact the Credit Card Center of CCB to confirm that I applied for lifting this restriction by card transaction.