It was the same as the strange void energy Sikong Jing had absorbed inside the world of the void rift.
As long as he devoured the essence blood of Nine Heavens magic beasts, scenes of Nine Heavens battling magic beasts would emerge—and they would become clearer and more profound.
Sikong Jing had already witnessed it back at the Imperial Legacy Battlefield.
It was only that he had nearly fallen into demonic corruption because of the magic beast essence blood at the time, so he had been unable to see it clearly. Now, the amount of essence blood he absorbed was far less than before—only the tiniest trace.
With his Pure Spirit Seven Hearts Method having reached the realm of the Fifth Heart, it was enough to suppress it and prevent him from falling into demonic corruption.
Moreover, he now had the Heaven-Soaring Imperial Bloodline and the grand formation of the Imperial Hall Stairway to conceal the eruption of demonic nature. Thus, Sikong Jing could stabilize everything and observe the battle between Nine Heavens and the magic beasts contained within the essence blood.
Of course, at this moment, Sikong Jing had to endure all manner of pain and steady his mind as he observed it.
And so...
The scenes of battle between Nine Heavens and the Blood Devour Magic Beasts appeared in his mind. After striving to comprehend the powerful aspects of both sides, Sikong Jing returned to digest and study them, then continued deducing the Nine Heavens-Breaking Army-Slaying Formation...
Three days later...
Sikong Jing gave another bitter smile and said, "Heaven-Soaring martial arts are no longer enough either."
As he spoke, he looked again at the various incomplete manuals around him that needed restoring, drawing them over to study. At the same time, he used the Heaven-Soaring martial arts within