At this moment, Forefather Blood Devil had completely fallen into the Immortal Slaying Sword Formation.

It was said that the Nether Blood Sea was a terrifying place, and Forefather Blood Devil had always been rolling around in the Nether Blood Sea. But his teeth chattered as soon as he fell into the Immortal Slaying Sword Formation. An inexplicable sense of fear came to his mind.

The Immortal Slaying Sword Formation formed its own world. The sun, the moon, the stars, the wind, and the thunder and the fire were constantly changing.

Forefather Blood Devil only felt a chilling murderous aura. He couldn't tell the direction.

The murderous intent all over the sky turned into dark clouds. In the clouds, streaks of star-like sword light glittered. Under the control of the master of the main formation, the murderous intent rushed to Forefather Blood Devil.

All of a sudden, thousands of rays of Sword Energy streaked across the body of the Forefather Blood Devil and his doppelganger.

"Ah!" Forefather Blood Devil cried out in alarm.

The Sword Energy tore the two blood-stained bodies into thousands of blood-stained pieces in an instant, as if they were cut into pieces.

After tearing apart the two bloodstained bodies of Forefather Blood Devil, the swift and fierce Sword Energy gradually turned into nothingness.

With a thought, the tens of thousands of bloodstains began to squirm and rapidly coalesce together. Moments later, they once again formed two human-shaped figures.

Forefather Blood Devil and his doppelganger looked at each other in horror but found that there was nothing unusual with them, just like being attacked by any magic and Sword Energy. Forefather Blood Devil couldn't help but let out a sigh of relief.

"Could it be that this formation doesn't work on me? Ah? Hahaha!" Forefather Blood Devil couldn't help laughing.

"We have bodies made of bloodstains that can be gathered and scattered and can't be attacked by Sword Energy. The old Taoists of Kunlun Sect and Xiao Yi haven't figured this out, have they? What can a sword formation do to us? Hahaha." Forefather Blood Devil's doppelganger also said arrogantly.

"When I find the person in the main formation, I'll tear him apart! So what if it's the Immortal Slaying Sword Formation? Today, I'm going to destroy the number one killing formation since ancient times!" Forefather Blood Devil shouted and was about to cast out the Method of Apocalypse.

However, right at this moment, another surge of boundless killing intent surged over from another side.

"Again? Come on, let's see what you can do to me!" Forefather Blood Devil and his doppelganger looked at each other and shouted arrogantly. On the contrary, he took the initiative to confront the dark cloud of murderous intent.

However, Forefather Blood Devil began to regret his actions in the next second.

This killing intent was no longer the boundless Sword Energy but an inexplicable, mountain-like pressure.

When Forefather Blood Devil's doppelganger made contact with the killing intent, it was crushed on the ground with a crack. Its massive body was instantly crushed into a thin layer of blood by the pressure, and it was unable to move in the slightest. Even this formless body of blood was almost crushed to pieces.

The real body of Forefather Blood Devil desperately resisted for a few seconds and could no hold on any longer. His mountainous body was gradually forced to kneel. There was a loud crack in the end, and he was crushed to the ground. No matter how hard he struggled, he could not move at all.

"Ah, what is going on?" Forefather Blood Devil cried out in alarm.

However, he heard Qian Ji's voice. "Senior brother, it's your turn!"

"Attack!" Qianhong roared. When he thought about the eleven peaks of Kunlun Mountain that had just been stained with blood, Qianhong's eyes once again turned red. He fiercely urged the Silver Moon Sword, and waves of murderous intent attacked Forefather Blood Devil in a manner visible to the naked eye.

Forefather Blood Devil widened his eyes in horror. After a while, he and his doppelganger cried out in pain.

The murderous spirit emanating had actually entered his Mind Sea.

Like pieces of blades, they cut through the Divine Awareness of Forefather Blood Devil and his doppelganger bit by bit.

Divine Awareness was a weakness of Forefather Blood Devil. Once this powerful Divine Awareness attacked him, the doppelganger could no longer hold on. After a painful cry, the Divine Awareness was scattered, and the body could not be maintained. In a scream, it gradually turned into a pool of blood, and its body and soul were destroyed just a little more.

Forefather Blood Devil's Divine Awareness was also greatly damaged. When he looked at his last doppelganger, whose soul and body were about to be destroyed, he felt a great pain in his heart, but there was nothing he could do.

Just as he felt heartache, Xiao Yo's sword formation had already arrived.

The nine palaces lit up as a golden light flashed inside the Immortal Slaying Sword Formation. Starting from the Gan position, an endless amount of Yang Qi surged out and shone on the bloodstained body of the Forefather Blood Devil like tens of thousands of suns.

Forefather Blood Devill's doppelganger had just turned into a pool of blood. After being shined by such a pure Yang Qi, it completely dissipated instantly. Only a blood-red internal core was left. Xiao Yi moved his mind and got it out of the formation.

"Ah!" Seeing the doppelganger at the peak of the Nascent Soul Realm Realm silently getting destroyed, Forefather Blood Devil could not help but scream.

However, after a while, he did not have time to care about his heartache, because the Yang Qi, which was like tens of thousands of suns, also made him suffer a thousand times.

It was also because of Forefather Blood Devil's extremely powerful cultivation that caused his blood stains to shrink rapidly. All of the essences of his body were tightly packed within his dried-up body. Without moving an inch, he managed to withstand the attack from the Gan position.

However, after the attack from the Gan position, the attacks did not stop there. The Kun position, Zhen position, Xun position, Li position, Kan position, Tan position, Gen position, and Dui position followed like shadows. Then, the attacks arrived.

Forefather Blood Devil gritted his teeth and threw out the treasures he was carrying, resisting them. However, every treasure comparable to the Immortal Weapon was turned into fine powder after being attacked by endless attacks.

Only at this moment did Forefather Blood Devil finally understand what it meant to say, "The formation is born in endless seconds, and immortals are dyed with blood". The power of this Immortal Slaying Sword Formation was increased layer by layer. Within the formation, waves of murderous intent were added to the people inside.

From the first wave of Sword Energy to the various attacks from the nine palaces, the strongest killing moves in the world appeared one after another.

No matter which property of cultivation skill one was cultivating, there was always a kind of attack that was useful.

Legend had it that the four swords could launch eighty-one attacks in total until everything in the formation was crushed into powder, and body and soul were wiped out.

It was because of the excessive slaughter that the Immortal Slaying Sword Formation was named the number one killing formation in ancient times.

After the first round of attacks, Forefather Blood Devil exerted all his strength to pass the first round, he gathered his bloody body, but sadly, he found that he was now only half his original size. His Divine Awareness was badly damaged, and his strength dropped to the early stage of the Apotheosis Realm, showing faint signs of lowering through to the Apotheosis Realm.

This was because his body was stained with blood. Otherwise, if it were anyone else, their bodies and souls would have already been destroyed by now.

Forefather Blood Devil's magic treasures have been used up. Just as the light flashed again inside the formation and the next round of attack was about to come, Forefather Blood Devil was scared and desperate. He had never been willing to admit defeat. At this moment, he could not help but cry out in grief, "I'm going to die!"

However, it was such a coincidence that Forefather Blood Devil suddenly heard an unusual click from inside the formation as all the murderous intent in the formation began to waver.

Gradually, the four gates and nine palaces became clear and bright. The figures of Xiao Yi, Qianhong, Qian Ji, and Qian Fa were also revealed.

More than that, there were cracks visible to the naked eye on the four Immortal Swords in front of them.

The faces of Xiao Yi and the others were also filled with shock. It was apparent that this situation was something that Xiao Yi and the others hadn't anticipated.

However, after a brief moment of shock, everyone, including Xiao Yi, Qianhong, and Forefather Blood Devil, also understood the crux of the matter.

It must be the four substitute Immortal Swords. They could not bear the overwhelming killing intent from the ancient Immortal Slaying Sword Formation and gradually collapsed. The weakness of the flying swords directly caused the operation of the Formation to be hindered and flawed.

The three old Taoists' faces changed dramatically.

The expression of Forefather Blood Devil changed over and over again. Finally, he was happy. How could he not be certain of his survival in this hopeless situation?

With a loud cry, Forefather Blood Devil madly threw himself at the weakest one, Qian Fa. He was about to escape from the place he was at.

Qian Fa could not stop this desperate attack.

"Ahh!" With a cry of pain, Forefather Blood Devil slapped Qian Fa in the chest. He was forcibly thrown off the Platform and fell heavily on the ground. It was unknown whether he was dead or alive.

Without Qian Fa, the formation immediately turned into darkness. The Startling Rainbow Sword fell to the ground with a loud thud.

"Junior brother!" Seeing this scene, Qianhong and Qian Ji were greatly shocked. They urged the True Energy in unison and activated the Flying Sword, aiming straight for Forefather Blood Devil. However, under this forceful operation, the Immortal Slaying Sword Formation, which had already covered the cracks, finally failed to withstand the boundless murderous intent and collapsed completely.

"Ah!" Both Qianhong and Qian Ji let out a muffled groan. Their Divine Awareness was severely damaged, causing fresh blood to flow out from their Seven Apertures. Their bodies swayed, and they both fell off the platform.

Their places turned dark at the same time.

Forefather Blood Devil, who had been frightened to death by the Immortal Slaying Sword Formation, suddenly did not want to escape when he saw this scene. Instead, he turned around and looked at Xiao Yi, saying with a strange laugh, "Kid, I'll kill you first today!"

Then, he threw himself at Xiao Yi!

Xiao Yi saw the sudden change. In the blink of an eye, the three old Taoists of Kunlun were seriously injured. The Immortal Slaying Sword Formation, originally close to victory, could not be set instantly. With such a shocking reversal, even if Xiao Yi's mind was as firm as an iron stone, he could not help but change his face greatly.

Forefather Blood Devil's eyes were about to split open as he lunged at him with a hatred that tore through everything.

At the crucial moment, Xiao Yi couldn't care that much.

A thought immediately flashed through his mind. With a loud shout, he immediately summoned the Soul Devouring Beast.

The Soul Devouring Beast didn't dare to be scared at this critical moment between life and death. It immediately shook its big nose and took a deep breath toward Forefather Blood Devil.

Forefather Blood Devil suddenly felt a strong force coming from his Mind Sea. His Mind Sea shook, and his Divine Soul was about to break out of his body.

This familiar feeling had already appeared for the third time. The first two times had been used on his doppelganger. Finally, this time, the actual body had to endure it.

When his body was completely motionless, Forefather Blood Devil began to regret that he had not escaped just now.