Can Ctrip make up the room difference halfway?

Yes According to the inquiry of Ctrip official website, when I bought the air ticket, I chose a single person to make up the room difference. Later, I don't need to live alone, so I can cancel the single person to make up the room difference by canceling the air ticket. Single room difference is a common term among travel agencies. In the process of traveling, the housing is generally a standard room, and the hotel rooms are occupied by rooms, with two beds in one room.