This is shown on the schedule on Ctrip. Is this 12 noon or 12 pm? The hotel I booked said that the check-in time is after 14:00. I

This is usually 12 noon, because things like this usually use the 24-hour clock system. But look which hotel it is from. If you can't make it at 12 noon, you can call them first to make a note, saying that you may not be able to make it in time, and the hotel can usually reserve a room for you