Chapter 135: Chapter 135 Breakthrough to the Nine Layers of Nirvana Realm!

Gu An did not use Divine Sense to probe the Foundation Establishment Realm cultivators inside the Book Collection Hall. Divine Sense could not be used for life span detection, and using Divine Sense would be meaningless. If the other party practiced some kind of Miracle Skill and could detect higher-level spying, it would cause unnecessary trouble.

Returning to the Mystic Valley, Gu An went upstairs and took out the map scroll and the book given by Xu Lu.

The book was called the Chronicles of the World. It detailed the general situation of various places, and the information about all regions on the map could be found in this book.

Gu An carefully studied it, looking for a suitable place for a breakthrough.