C57 Shangguan Yan's Telephone

This was because Qin Rou had often seen Feng Shao reading on the top floor of the school ever since the two had broken up. Thus, Qin Rou's intuition told her that Feng Shao was going to the roof.

The top floor of the hotel was the 30th floor, and was currently the 21st floor. In other words, if he were to walk, he would need to climb up to the 9th floor