"Returning to the Douluo World for only a few short days, my strength has already increased considerably."
Gu Yi looked inward at his dantian. The blood-colored crystal within had grown much larger, and his cultivation had reached level eighty-four.
However, he had yet to break through to the ninth level of the Spirit Martial Realm and remained at the peak of the eighth level.
Gu Yi felt entirely at ease and was in no hurry.
The Bone Martial Soul currently had only two soul rings attached to it, leaving six empty soul ring slots.
Gu Yi had already decided which soul beasts he would hunt for those six soul rings.
With the energy supplied by those soul rings, it would be more than enough for him to break from the Spirit Martial Realm into the Profound Martial Realm and transform the True Qi in his body into True Essence.
"However, after breaking through to the ninth level of the Spirit Martial Realm and before advancing to the Profound Martial Realm, I need to deduce my primary cultivation art, the Blood Fiend Art. I need to merge it with the profound essence of that cultivation art from the Venerable's memories and raise it to the earth grade." Gu Yi pondered inwardly.
The Venerable's memories contained quite a few heaven-grade and earth-grade cultivation arts.
Among them, the one Gu Yi most wanted to cultivate was an earth-grade low-rank art known as the Great Sun Burning Heaven Scripture.
Among the many heaven-grade and earth-grade cultivation arts, the Great Sun Burning Heaven Scripture might have had the lowest starting point.
But it possessed one advantage: it was the only cultivation art capable of evolving!
Its rank depended on the strength of the Sunfire True Essence cultivated by the martial artist.
The stronger the Sunfire