How does Ctrip collect commissions from hotels?

First of all, there is a contract with the hotel. In addition, there are night reviews and daily reviews on travel booking websites. When guests check in, they will confirm with the hotel. If the guests leave the hotel and the number of days they booked, they will send a confirmation letter. If not, they need to confirm with the hotel and customers again, especially Ctrip. Most hotels don't want to offend. Good rules are like this, simple and effective.