Leon sat atop the broad back of the dragon, flipping through the book his master had just given him, *The Gate of Nine Infernos*.

The title sounded intimidating, but the content was packed with valuable information.

As his master had mentioned, it was a book on physical training techniques.

Judging from the table of contents, the majority of the earlier chapters focused on teaching the reader how to train their body more effectively, to reach a level beyond human limitations.

But the latter chapters were the real core of *The Gate of Nine Infernos*.

Leon skimmed through them without reading …