Ye Tian re-entered the cave. After reading the booklet, he now understood the purpose of the ninety-nine piles of bones. The first pile was used to cultivate the first generation of Bone Gu. After three years of cultivation, those that met the standards were moved to the second pile.
This process of continuous cultivation and selection for ninety-nine times was followed before the finally qualified Bone Gu were placed in the Bone Pit for their final transformation.
Logically, by this stage, the Gu Immortal should have achieved his goal. So why did he still leave the Bone Gu behind?
He suddenly asked, "Old Li, what do you think?"
Li Xuangui, who had been silent for a long time, said, "Haven't you noticed? There's a set of remains here that's different from the others."
Ye Tian looked closely. Indeed, among the many piles of bones, one pile was different from the rest. It emitted a faint purplish-gold hue, and its bones were much heavier than the others, almost as heavy as steel.
A thought struck him: "Has the Gu Immortal died?"
Li Xuangui sneered, "If my guess is correct, this Gu Immortal was also a Human Immortal like you. He wanted to break through to Earth Immortal by using the Bone Gu. But unfortunately, he failed."
Ye Tian: "What was the reason for his failure?"
Li Xuangui: "These Bone Gu absorb the essence of human bones and have developed sentience. This Gu Immortal couldn't control them and was eventually backlashed by the Bone Gu."
Ye Tian was startled and said, "It seems I shouldn't try this."
Li Xuangui: "What are you afraid of? This Gu Immortal spent centuries cultivating the Bone Gu, and it has been further cultivated by many later cultivators. The Bone Gu are already extraordinary. Wouldn't it be a waste not to use them?"
Ye Tian: "Did others cultivate it later?"
Li Xuangui sneered, "Otherwise, where do you think these bones came from?"
Ye Tian sighed, "It seems none of them succeeded. Most likely, they were also backlashed."
Li Xuangui: "Whether they lived or died, at least the opportunity has fallen into your hands."
Ye Tian: "I'm also afraid of being backlashed."
Li Xuangui: "You have your inner core. What are you afraid of? These Bone Gu have already gained sentience. Your inner core can absorb and refine them, converting them into purer energy."
Ye Tian's heart stirred, and he immediately released his inner core. The inner core landed on the bones, and many small holes automatically formed on it.
Instantly, countless tiny silver insects crawled out and burrowed into the inner core. Then, the emerging insects grew larger, eventually becoming slender silver worms, like small snakes, that burrowed into the inner core without hesitation.
Ye Tian was surprised, "They seem to like the inner core very much?"
"Of course. To the Bone Gu, this inner core is the best bone in the world. However, your inner core is truly intelligent to have lured them into a trap."
In the end, the entire pit began to vibrate, and more Gu worms crawled out. The last worms to emerge were almost in a spiritual form, equivalent to energy bodies.
Half an hour later, as the last pale golden worm entered the inner core, the inner core suddenly closed its holes and began to spin in place.
As it spun, it expelled black impurities.
Li Xuangui laughed, "My prediction was correct. This inner core can be refined. These expelled substances are useless Gu worm impurities."
After more than ten minutes, the inner core stopped spinning and returned to Ye Tian's body.
As soon as the inner core returned, it released a wondrous power that permeated every cell of his body, comparable to the immortal power he had obtained before.
However, more power entered his bones, and his bones began to undergo a strange transformation. Natural patterns resembling runes appeared on the surface of his bones, imbuing them with an indescribable beauty.
Ye Tian didn't have time to savor the changes in his body and immediately left the cave.
As soon as he emerged, Ren Ping had the robots take explosives into the cave. After everyone had moved far away, a deafening explosion was heard, and the cave collapsed, causing half the mountain to sink. If anyone wanted to excavate what was inside, it would take them at least ten to eight years!