The library of Dali Academy was one of the wealthiest places in all of Dali Dynasty in terms of the variety of books available. One could even say that if there was something more precious other than the palace of Dali Imperial City, it was the books stored in the library of Dali Academy.
Dali Dynasty was a royal force, and many of the most powerful books and records regarding the most powerful cultivation methods available were all found within the palace. Dali Academy earned the support of Emperor Li back then when the place was established all those years ago. As such, many of the books found within the library were copied from the ones in Emperor Li's Palace. As the place had gotten increasingly established, the library of the Dali Academy had become something like a holy land among holy lands. Powerful books on cultivation were available in untold numbers to the students of Dali Academy for furthering their training.