The hotel entered the card number when booking. Is there a charge for canceling the reservation?

You have pre-authorized your credit card, which is equivalent to your credit card freezing the room rate. Now that you have cancelled the hotel charges, you can change the pre-authorization of the credit card into consumption to deduct your expenses. Of course, if you are deducted, you can apply to the bank for refusal of payment, and then the bank will withhold the fee and ask the hotel to provide proof of deduction. All this fuss, it is estimated that your room rate will not be deducted, hehe.