Having read on the second floor, Miguel instantly realized the difference between this and the first floor.
For starters, the knowledge stored here was clearly more advance. It was guarded and stored securely and no one could easily read the contents of each book or information.
Second, the reading experience here was more amazing as it was very serene. The first floor had a lot of people loitering around and Miguel even needed to cast [Concealment Barrier] there just to not get disturbed by stray noises.
Here on the other hand, such experience could be neglected. Although there were still people loitering around, searching for books and information they wanted to obtain, it was subtle compared to the first floor. The people here were also more disciplined, they knew the rule of this place and the punishment for breaching it.