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But that era was, after all, nearly ten million years ago from today.
In such a magnificent river of time, the body cultivation method had long been cast into the dregs of the temporal flow.
After numerous verifications, the Ascension Immortal Method was proven to be the most perfect path.
This was well known in the Cultivation Realm, by the majority.
At least, Blazing Sun True Monarch had never heard of anyone in the Northern Thirteen Domains or within the Four Nations pursuing the path of body cultivation.
However, what Blazing Flame True Monarch didn't know was that the role of [Five Viscera Spiritual Fire] was far from just that.
At the very least, he was unaware that [Five Viscera Spiritual Fire] could be used to burn within the Nascent Soul to refine spiritual energy.
After all, compared to refining blood and flesh, refining spiritual energy is the greatest help to cultivators.