Because the Hong Kong Hotel booked ten days ago has been paid, how can it be cancelled because it can't go?

Because Hong Kong hotels are in the peak season (seafood prices), the prices are different every day, so guests who book hotels need to "guarantee" the room rate. So your situation should be that the room rate is guaranteed. So the general hotel will not give you a check-out fee. However, if you negotiate with the hotel or travel agency (the agency that booked the hotel for you), you can reschedule your room rate to another day, and generally the rescheduled date cannot be changed. Moreover, if the room rate you booked is higher than your original pricing, you have to make up for it, but if it is lower than your room rate, you will not refund more.