ICBC's credit card balance suddenly dropped by more than 600 for at least a week. What happened?

Hello, landlord:

Congratulations, ICBC offered to give you a quota;

The available balance is the amount on your card MINUS the money you spent. If you don't spend, it means that your amount has increased from one yuan to 600 yuan;

The balance is the money you spent. If your last inquiry is the same as this one, it means that you didn't spend money during this time.

I hope I can help you.

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