The venue is divided into time periods, generally about 2 hours for a session, more than the time less than 2 hours by half a session, more than 2 hours beyond the time by a session.
Of course, nowadays there are also by the day, by half a day of calculation.
Chengdu is currently 100 square feet of five-star hotel venue prices per day in the 8,000-16,000 or so, three-star about 3,000-6,000 or so. Just for reference