Xuantian Immortal Cultivation Record

Having successfully collected the bone fragment, Zhang Yuanjing escaped the swamp and returned to the foot of the mountain. He set up the Yin-Yang Creation Furnace, consumed a Scarlet Cloud Pill, and ignited the Yin and Yang fires to refine it.

The bone fragment he had collected was only the size of a palm, a thin piece that had likely broken off from a larger bone. However, even after being burned by the Yin and Yang fires for half a day, it only turned slightly white.

Later, upon closer inspection, he realized that the fragment was subtly absorbing spiritual energy from the surrounding world to resist the Yin and Yang fires, as if it were a living being capable of breathing and circulating energy.

"Just a broken bone, yet so difficult to deal with!" Zhang Yuanjing muttered, a smile appearing on his face.

This broken bone was indeed extraordinary, piquing Zhang Yuanjing's intense interest. He put away the furnace and headed straight for the wilderness beyond the map.

Once there, he didn't venture too deep, only about a hundred miles in, choosing a spot with thin spiritual energy and no spatial rifts. He took out the Yin-Yang Creation Furnace again and used the Yin and Yang fires to refine the bone.

This time, there was progress, and the effect was quite obvious.

The bone fragment resisted for two hours before finally succumbing to the furnace's flames. It gradually softened, turning into something like glutinous rice cake, and then, under the high temperature, it transformed into droplets of black liquid that dripped to the bottom of the furnace.

This black liquid emitted a strange, pungent odor that stung the nose and slowly evaporated in the furnace.

Zhang Yuanjing hesitated, fearing that if he continued to refine it, the black liquid would disappear, leaving nothing behind. That would be a waste of effort and would destroy a precious item.

However, upon closer inspection, he noticed that after the liquid burned away, it left behind some black, muddy substance. He maintained the two fires to continue the refinement.

Finally, all the black liquid turned into black mud, which could no longer be burned, no matter how high the temperature.

Zhang Yuanjing stopped the Yin and Yang fires and used a flying sword to pick up a bit of the black mud. He examined it closely for a long time, but couldn't figure out what it was.

He sniffed the aroma, which was somewhat spicy and pungent, but didn't seem poisonous.

He thought for a moment and remembered that he had captured some carp rat demons in Cluster Mountain, which he hadn't dealt with yet. He took one out and forced the black mud on the tip of his sword into the beast's mouth.

The beast initially didn't know what Zhang Yuanjing was trying to feed it and struggled in fright. But when the black mud entered its mouth, its body shook, and it visibly became excited, barking and squealing as if asking for more.

Zhang Yuanjing naturally wouldn't give it more. He threw it to the ground, cast a spell to confine it, and waited for two hours. The rat demon was still jumping around, full of energy, occasionally rubbing its front paws together and making pleading noises, as if begging to be released.

Two hours was enough to determine that the black mud-like substance was not poisonous, but it didn't mean it was harmless.

This amount of time was insufficient to fully understand the situation, and there was no way to know what consequences might arise later.

After pondering for a moment, he decided that he needed to conduct another test. He took out a three-inch jade box, stored the black mud-like substance from the Yin-Yang Creation Furnace, and threw the carp rat demon back into the spirit beast bag. He then flew towards the swamp on his flying sword.

Before long, he arrived at the small island where the Bristle Beast had rested.

The island had been ravaged by the strange demon beast and was in a terrible state. The trees that had once covered the island were all toppled, not a single one intact. The ground was cracked everywhere, the soil turned over, a scene of utter devastation.

He used his magic power to clean up the island, clearing a flat area of ​​five square yards. Then, he took out the Anti-Five Elements Locking Yuan Formation flags and formation plate, which he hadn't used for many years, set up the formation on the ground, walked into the formation, and threw in the carp rat demon that he had fed the black mud to.

The carp rat demon, now free, immediately rushed out, circling around in the formation, disoriented. Realizing something was wrong, it burrowed into the ground, but before it could dig far, it was blocked by the formation's power. No matter how hard it crashed, it was futile.

The Anti-Five Elements Locking Yuan Formation could trap even a Foundation Establishment Completion cultivator, let alone this carp rat demon that had just entered the Spirit Opening Realm.

After trying a few times and realizing it couldn't get out, the demon gave up, obediently lying in a half-foot-deep pit, yawning listlessly.

After half an hour, ethereal energy emerged from the swamp. After being impacted by the spiritual energy, it formed polarized spiritual energy, and a few strands drifted towards the island.

Zhang Yuanjing manipulated the formation flags, releasing a corner of the formation's power, allowing the polarized spiritual energy to enter the formation.

The carp rat demon didn't notice this. When the polarized spiritual energy approached, the beast sniffed with its red nose, its small eyes looking in the direction the polarized spiritual energy was coming from, with a look of confusion.

However, it ultimately couldn't resist its instincts and gradually walked towards the polarized spiritual energy. When it reached the front, the polarized spiritual energy, attracted by the aura in its body, fell upon it.

It was startled and quickly turned to run away. After running a few steps, it couldn't help but turn its head to look, somewhat reluctant.

When it stopped, the polarized spiritual energy slowly chased after it.

This time, it didn't dodge, allowing the polarized spiritual energy to fall on its body.

In that instant, its body trembled violently, as if struck by some enormous force, completely unable to resist.

But after only that instant, it returned to normal.

Zhang Yuanjing focused his spiritual sense on it and saw that the aura in the carp rat demon's body was slowly increasing, and its circulation was very stable, without the violent situation of the polarized spiritual energy appearing.

He was very surprised—the black mud was so magical that just a little bit could transform an ordinary demon beast so that it could absorb polarized spiritual energy!

Just as he was amazed, the carp rat demon showed an abnormal appearance. It screamed and jumped, its body's qi and blood surged, and blood blisters bulged out on its body surface.

Zhang Yuanjing was about to invade its body with his divine sense to take a closer look when he heard a "bang," and the beast exploded directly, with limbs and minced meat splattered all over the ground.

He sighed disappointedly. This situation showed that relying only on that little bit of black mud was not enough to transform a carp rat demon. However, how much would be needed to succeed could not be estimated.

To verify this matter, he didn't know how much black mud would be consumed. Moreover, this was only a Spirit Opening Realm carp rat demon. If it were replaced by Ape Thirteen or the Azure-Eyed Suanni Beast, how much would be needed!

In this case, all the remaining sixteen broken bones must be taken away. At the very least, he had to get a few ten-foot-long broken bones, which might be enough for Ape Thirteen and the Azure-Eyed Suanni Beast.

He once again drilled into the mud, probing each of those places where spiritual energy was concentrated. He found three broken bones, all less than a foot long, which he forcibly collected into the Yin-Yang Creation Furnace with his magic power.

The remaining thirteen broken bones, the shortest of which was the length of an arm, were already able to control the surrounding spiritual energy to protect themselves, and could not be forcibly taken away.

Strangely, he didn't find a single Bristle Beast. Since such demon beasts were recorded in the Profound Origin Hall, it meant that there were a certain number of them, but he didn't know where they were all hiding.

He tried his best, using all kinds of methods except the Yang Refining Umbrella, but he couldn't break through the protection of the broken bones, so he stopped wasting his energy and left the swamp first.

He was not in a hurry to break through these places where spiritual energy gathered. The transformation of Ape Thirteen and the Azure-Eyed Suanni Beast could be done slowly. After all, his own cultivation was fundamental. These places where spiritual energy gathered could be used for cultivation.

However, before doing this, he still needed to return to the Profound Origin Hall to arrange everything properly.