The state of mind method that Ryan was about to cultivate was not the Great Sun Codex. The Great Sun Codex was actually a good method, but if he relied on it to improve his state of mind, the speed would be too slow.
The Supreme Hall of the Human Race had who knew how many state of mind methods far better than the Great Sun Codex, and Ryan naturally chose a good one.
Now, the Inheritance Treasure Pavilion of the Yellow-level region was open to Ryan for free, and he could browse any of the divine powers, secret techniques or martial materials in it without spending a single point.
After some searching, Ryan found a top-level state of mind method.
Dark Silence True Canon!
The Dark Silence True Canon was much more advanced than the Great Sun Codex, and it was also divided into six levels, but unlike the Great Sun Codex, which did almost no harm to the soul, the Dark Silence True Canon could damage the soul if one was careless in cultivating it.
