Why can't Meituan make a reservation and cancel the order? There is no standard room in the hotel.

The cancelable time has expired. Meituan can't cancel the order because the hotel has stipulated the time limit for canceling the order, and it can't be cancelled after the time limit. However, because there is no standard room due to the hotel, you can negotiate a refund with the hotel, or you can contact Meituan customer service to cancel the order refund.