"Immortal-Refining True Formula..." A moment later, Wei Tu set down the vermilion jade slip in his hand, let out a long breath of stale air, and carefully contemplated the true meaning of this cultivation method.
In terms of its level, this method was not the least bit inferior to the "Immortal-Demon Dual Cultivation" technique that had previously appeared in his mind. It was likewise a profound art that could be cultivated all the way to the Tribulation Transcendence Realm.
However, unlike that technique, the Immortal-Refining True Formula did not involve the dangerous operation of turning the "True-Spirit Immortal Bone" into a "demon bone." Everything it contained was beneficial.
It was a rare cultivation method in the cultivation world, one that greatly helped cultivators increase their reserves of spiritual power.
Spiritual power might appear far less important than a cultivator's other two treasures—the "physical body" and the "divine soul"—but in truth, for spirit cultivators, spiritual power was the source of all strength.
With abundant spiritual power, at the Golden Core and Nascent Soul Realms, the Golden Core and Nascent Soul one condensed would be formidable. One could achieve a "One-Foot Heavenly Infant," and thus gain hope of breaking through to Spirit Transformation...
With abundant spiritual power, at the Spirit Transformation and Void Refinement Realms, one could also leverage more of the five-element essence between heaven and earth, greatly reducing the mortality rate from the impact of heaven-and-earth laws during a breakthrough.
In battle, it could even crush ten techniques with one force, crushing or exhausting one's opponent to death.
Yet ordinary cultivators found it difficult to use something as simple as spiritual power to widen the gap between themselves and other cultivators.
The reason was not complicated.
Most Foundation Establishment prodigies faded into the crowd upon reaching the Golden Core Realm.