Sword Emperor

At this moment, the only thing that could be seen in the entire world was the blood-red light. There was also an incomparably dense killing intent that swept across the Vault.    

At this moment, the entire sky was incomparably gloomy, and one could faintly see the flickering of the thunder snake. Any cultivator who was in this area would feel a trace of panic in their hearts.    

Seeing this situation, Sun Bing furrowed his brows even more tightly. "What exactly is going on? It's just a transformation into a half-monarch artifact. Why would a thundercloud appear?"    

It could be said that this scene had far exceeded Sun Bing's expectations. Normally, the lightning tribulation could only appear when a weapon was successfully forged, but there wouldn't be any abnormalities during his evolution.    

However, before Sun Bing could figure out the reason behind this, he could see the Immortal-sever Sword floating silently in the air. The blood-red light was blinking continuously, and there were even corpses and seas of corpses appearing, as if it was challenging the lightning tribulation in the sky.    

In an instant, the incomparably black thundercloud became more and more oppressive. Countless thunder snake swept across the place. This fluctuation was even more terrifying than Sun Bing's breakthrough into the Supreme Realm.    

Thousands of dark clouds were rolling. One could vaguely see an incomparably huge but emotionless eye that was staring at the Immortal-sever Sword below quietly.    

The moment Sun Bing saw this scene, his face was filled with astonishment. He couldn't help but exclaim, "Eye of Heaven's Retribution!"    

It could be said that Sun Bing was quite familiar with this. That eye represented the will of the heaven and earth. Obviously, it wanted to completely grind the items under the lightning tribulation.    

However, the Immortal-sever Sword naturally wouldn't just sit there and wait for its death. Immediately, it launched a counterattack, and the dazzling sword light immediately swung towards the sky. The aura contained within it could even split the sky and split the earth.    

For a moment, a world-shaking sound erupted. Numerous thunder snake danced wildly, and blood-red sword beams shot out in all directions. Both parties continued to resist in the void.    

At this moment, the entire sky could only see the endless purple thunder snake and blood-red flowing light. This scene was spectacular to the extreme, and it was also incomparably horrifying.    

After such a long period of time, Sun Bing finally understood what was going on. If it was just a transformation of an ordinary weapon, there would not be so many clues. However, the Immortal-sever Sword was different.    

It was the number one killing weapon since the ancient times. The killing intent gathered on it was already shocking enough, not to mention that it had absorbed the killing intent from Sa Ye's Asura Blade, which made it look even more alluring.    

It had already reached a level where it could hurt the heavens. Even if they didn't attack, just the eruption of the dense killing intent could confuse the mind of cultivators with weak willpower, which was why the heaven and earth wanted to destroy it.    

After figuring this out, Sun Bing knitted his brows tightly. After all, he could only rely on himself to survive this lightning tribulation. If Sun Bing interfered, not only would he not be able to save the Immortal-sever Sword, but he would also be in danger. This was truly a dilemma.    

Time slowly passed. The battle between the Immortal-sever Sword and the Eye of Heaven's Retribution had yet to end. In fact, it was getting more and more intense.    

The surging thunder snake had already transformed into numerous thunder dragon. The flickering blood red light had even turned into a terrifying sword light that stretched for millions of meters. The aftershocks of this world shocking collision were enough to shock everyone.    

As for Lang Xuan and Yan Yuan, their faces were filled with shock, and they couldn't help but mutter: "This, this, is this really the power of a half-monarch artifact?"    

It wasn't as if the two of them hadn't seen a half-monarch artifact in so many years. They had even come into close contact with it, but it could be said that there had never been a half-monarch artifact that could unleash such a terrifying power without a master.    

Regarding this, Sun Bing didn't make a fuss about it. After all, the sword was a weapon that focused on killing. Furthermore, this was an Immortal-sever Sword that contained boundless killing intent.    

Under the superposition of both parties, the power that they could unleash was naturally far beyond their imagination. Apart from the point of attack, the rest of the convenience was not worth mentioning.    

Of course, just this kind of terrifying attack was enough to satisfy Sun Bing. After all, what a swordsman was most proud of was his extraordinary killing ability.    

After such a long period of collision, even though the Immortal-sever Sword was terrifying immediately, it still felt a little powerless at this moment. Its body, which was originally floating in the air, couldn't help but flicker.    

However, the Thunder Sea in the sky didn't weaken in the slightest. It continued to descend, as if it would never stop.    

This caused Sun Bing to furrow his brows slightly. "Could it be that the Immortal-sever Sword can no longer resist the lightning tribulation and is going to be completely destroyed?"    

Thinking of this possibility, Sun Bing immediately shook his head. "No, I will definitely not allow this to happen. I must ensure that the Immortal-sever Sword can successfully transcend the tribulation."    

After all, no matter which Four Swords of Immortal Slaughtering was missing, Sun Bing's strength would suffer a great decline. This was something he simply couldn't accept.    

But even so, Sun Bing was at a loss for what to do. After all, he couldn't interfere with the lightning tribulation himself, and he couldn't use any other means to defend against the lightning tribulation.    

However, at this moment, Sun Bing's sharp senses detected it. There was a big movement in the sword case behind him. When the sword case was opened, three rays of light immediately flew out and charged into the huge Thunder Sea.    

"It's actually an Immortal Slaughtering Sword, an Immortal Trap Sword, and unknown Immortal Slaughtering Sword!"    

Sun Bing couldn't help but mutter to himself. At the same time, a trace of understanding appeared in his eyes.    

After all, the Four Swords of Immortal Slaughtering had the same origin and aura. Therefore, the other three swords entering the Thunder Sea wouldn't cause any more clues.    

With the help of the other three swords, the Immortal-sever Sword instantly erupted with its own brilliance. A terrifying fluctuation emerged. Not only did it perfectly resist the surging thunder dragon, but it also had the strength to counterattack.    

The battle between the two sides became more and more intense. Within the myriad of Thunder Sea, one could only see the four bright lights flickering unceasingly, and they were even attacking the eye within the thundercloud.    

As time passed, the strength of the thundercloud became weaker and weaker. On the other hand, the Immortal-sever Sword's momentum was becoming more and more powerful.    

In the end, they could only see a blood-red stream of light rushing towards the sky. In the middle of it, there was an incomparably huge Eye of Heaven's Retribution. All the thundercloud instantly dissipated.