The 45th floor of this building is a free sightseeing floor. The scenery during the day is very beautiful and impressive, but it is worth coming again at night. Please note that sometimes there are a lot of people at night, sometimes there is a bit noisy. We did not encounter this situation during the daytime sightseeing on the first day, We were greeted by an English-speaking volunteer who helped us identify the direction in this huge crowded city and even gave us a thousand paper cranes as a gift when we left. These were all from a free tour!