Well the library is in his consciousness and he can access the knowledge with just a thought. It is quite different from how he access the Origin Tower
Ch 4 Chapter 4 : Origin Tower
Ancestral Throne : Building The Strongest Empire In Another World
I don't have much to say I only hope you add it to your collection. Although the introduction might not captivate you but you should try reading it and I promise you this novel is worth your time.
Ancestral Throne : Building The Strongest Empire In Another World