Zhong Zihao had been here for several months, and only after he had passed through many formations did he find a cave.

The strange thing is that the demonic aura in this cave is amazingly rich, and it is no worse than the tenth layer of the Guwu Streamer Tower. That's why he decided to retreat here and break through to the peak of the Void Realm in one fell swoop.

Compared to ordinary martial artists, he comprehended several more powers, and it became more and more difficult to advance, and the energy consumed by this breakthrough, according to his guess, was much more than ordinary people breaking through to the immortal realm.

"It's time to get to the bottom of it. ”

Zhong Zihao muttered to himself, and immediately relaxed the suppression of the Black Flame Demon Sword in his body. In an instant, a clear sword sound sounded, and the Black Flame Demon Sword broke out of its body on its own, levitating in the void.

For some reason, he could feel the joy, anticipation, and even a strong sense of nostalgia in the sound of the sword.

In fact, when he first entered this cave, the magic sword was ready to move, as if he had been summoned by something, and wanted to appear and see the old man. If it weren't for the fact that he was going to retreat and cultivate, he wouldn't have forcibly suppressed it so far.

Suddenly, the silver mangs in the cave were in full bloom, as if a bright moon had appeared, illuminating every inch of the entire cave mansion.

Zhong Zihao was slightly startled, his eyes followed the source of the light, and he saw that there was a transparent ball above the top of the cave, and the demonic power emitted was terrifying, even if he reached the peak of the immortal realm at the moment, he couldn't resist it.

It can be seen with the naked eye that inside the small ball, there is a black figure that is constantly flipping, like a spirit snake, like a dragon. As long as this figure twisted its body, the Black Flame Demon Sword would vibrate at the same time, and the sound of the sword became more and more intense.

Instantly, the small ball shot out a golden light, about a foot thick, and as soon as it appeared, it enveloped the Black Flame Demon Sword suspended in mid-air.

"Click!"

In Zhong Zihao's incredulous gaze, the transparent ball suddenly shattered, and a shocking force suddenly appeared in the audience.

"Bang!"

Without the slightest preparation, he was suddenly overwhelmed to the ground by coercion, but he knew in his heart that in the face of this unrivaled demonic might, even if he resisted with all his might, it would be useless.

However, he was also a little puzzled, in the face of the invincible Chaos Bead of Demon Power, there was no reaction at this moment, it seemed that it was not resistant to this power?

Fortunately, the target of this demon power is obviously not him, otherwise a generation of demon kings may have to fall here today without explanation.

The black figure broke free from its restraints and turned into a streamer of light and wandered around the cave, and after flying around the cave three times, it disappeared into the magic sword like a puff of green smoke.

"...... Sonor"

The Black Flame Demon Sword trembled violently, and the sword body began to change slowly. After about a cup of tea, a black light flowed on the sword's body, and the black on it became deeper and deeper, almost bright.

Suddenly, the magic sword danced on its own, and slashed out four swords against a stone wall in the cave. Four rays of light staggered out, which happened to be a "well" shape.

"Boom!"

The stone wall kept shaking, and the whole cave shook as if it would collapse at any time.

Then, where the stone wall was struck by four sword rays, four rays of light of different colors erupted, one black and one white, one blue and one purple. The four rays of light became more and more brilliant, condensing into a light gate embedded in the stone wall.

At the same time, a vast and majestic ancient aura permeated from it, making people palpitate.

And the Ancient Martial Arts Streamer Tower in Zhong Zihao's body, which had been silent for a long time, shook again, and the strength of this vibration was more than a hundred times stronger than when he first entered this canyon.

"Drink!"

Zhong Zihao's face changed wildly, and he shouted violently, using all his strength to suppress this shock.

At this moment, the situation is not yet clear, if the Guwu Streamer Tower is allowed to break out of the body, what will happen is unknown, and he does not dare to take risks.

Fortunately, the vibration of the ancient tower was only for a moment, and when the four rays of light on the stone wall disappeared, peace was restored.

Zhong Zihao was already sweating profusely, stood up tremblingly, and found that there were stars circulating on the light gate that had just flashed, like a vast starry sky, and there were countless points of light in it that emitted a faint light from time to time.

But he didn't dare to look at it more, because at the moment he was staring at this gate of light, there seemed to be an inexplicable force that drove him into it, and that force could affect his will, and his firmness could not resist it for long.

"Whew!"

After collecting the black figure and activating the light door, the Black Flame Demon Sword seemed to have completed some kind of mission, turning into a streamer and escaping into Zhong Zihao's dantian again.

"Ahh

Zhong Zihao exclaimed, the danger just now was still in front of him, this weird magic sword was too terrifying, it returned to the body after this mutation, would it pose a threat to itself?

The majestic soul power surged, and when he touched the Black Flame Demon Sword and learned some information from the latter, the expression on his face couldn't help but become wonderful.

"Peak Artifact!, one of the four great generals under the Demon Ancestor Throne, Hei Yan turned out to be his sword!" Zhong Zihao exclaimed in surprise, because the news he learned from the Demon Sword was too terrifying.

It turned out that the black shadow that the Black Flame Demon Sword had collected just now was its weapon spirit that had been lost for 10,000 years. The machine spirit returned, and the magic sword also returned to its peak state, reaching the peak artifact level in one fell swoop.

And the original owner of the Black Flame Demon Sword is Pestle, according to the fragmentary memories of the machine spirit, Pestle is a general under the command of the Demon Ancestor.

Zhong Zihao glanced at the light door on the stone wall, and longed to sacrifice the black flame to smash it. Because in order to open this door, the machine spirit exhausted all the power sealed in its body by the original owner, causing the memory to shatter and almost nothing.

In other words, although the Black Flame Demon Sword at this moment has returned to its peak state, it has also lost its prestige in ancient times, not to mention the inheritance memory carried by the machine spirit.

finally found a clue, and disappeared in a moment, how could Zhong Zihao not be angry?

Fortunately, the Demon Sword did not cause a backlash against him, perhaps because he had fused the essence and blood of the Demon Ancestor, the original owner of the Black Flame was loyal to the Demon Ancestor, and even if it was a broken instrument spirit, he could feel the breath in Zhong Zihao's body.

But the question arises again?

This magic sword of his was obtained from the Tongheng Battle Domain, could it be that the huge remains he encountered back then was a pestle? No, if it was a pestle, it would not have fallen in a sub-battlefield.

Perhaps, it was the Archer who sealed the Black Flame in the Heavenly Stone Pillar with his own hands, and the remains were just guardians, right?

One doubt is cleared, and another question haunts me again.

How could the spirit of the Demon Sword appear in the Heavenly Dome Sacred Realm? Could it really be as speculated that this alien space was created by man? And that person was the Demon, or the legendary Demon Ancestor?

Zhong Zihao was a little big for a while, why did the three major artifacts he possessed were all related to the demon race? Whether it was the Ancient Martial Arts Streamer Tower and the Hidden Dragon Tablet, or the Black Flame Demon Sword at this moment, it was all the same!

Even, the mysterious Chaos Bead is inseparable from the Demon Ancestor!

(End of chapter)