Yunjian Immortal King is worthy of being an immortal king giant, refining his Yuan Shen is far more difficult than refining other Immortal King Yuan Shen, and his memory is like that of other Immortal Kings, only a short period of 500,000 years, just digesting those memories of Yun Jian Immortal King made Zhou Tong spend hundreds of years.

"Sure enough, 500,000 years ago was the time when darkness returned to a foreign land. There are four great immortal kings in total, holding a pitch-black Ruyi in his hand, which is the origin of dark matter. But the four immortal kings, isn't the number a little small? ”

"Is this his secret art of time? It is worthy of the immortal king's giant-level avenue magic method, and it is really mysterious. It is enough to compare with the time secret method of the cricket treasure. ”

"His previous system of cultivating the Heaven Covering Law was actually acting on orders? Yunjian Immortal King doesn't know the reason? And the four immortal kings who came to the foreign land together are all like this? What exactly are they going to do? ”

"They once searched for the traces of the Emperor of the Desolate Heaven, and they wanted to erase everything? It seems that they are really here to cut off the return path of the Desolate Heavenly Emperor. Erasing the memories and traces of the Emperor of the Desolate Heaven from the heavens is naturally equivalent to cutting off the coordinates of the Emperor of the Desolate Heaven's return......"

"No, not only the four immortal kings, but also a dozen others? I said how could they only have four immortal kings, it turned out that there were other immortal kings who went to other places...... In this case, I'm afraid there are more than a dozen of them, maybe there are more? ”

For a whole thousand years, Zhou Tong continued to refine the Yuan Shen of the Yunjian Immortal King, and he watched the memories of the Yunjian Immortal King and knew a lot of secrets.

However, the more he knew, the more doubts he had in his heart. For example, what is the reason for them to switch to the system? For example, has the person who is in charge of them come? What is this person's realm? Where is he? What are you doing now?

"There are still some key things missing, such as the origin of the Yunjian Immortal King, these things should be hidden in the deepest part of his memory." Zhou Tong looked at the insignificant Yuan Shen of the Yunjian Immortal King.

After thousands of years of refining and refining, the powerful primordial god of the original immortal king giant has now weakened to the level of only a quasi-emperor.

"You can't hide the deepest stuff from me!" Zhou Tong opened his mouth coldly.

"Hmph, darkness is your ultimate destination, capture me, and try to explore the deepest part of my memory, this is your biggest failure!!" The Yuan Shen of the Yunjian Immortal King finally said this, and then as if he had touched some forbidden side, his Yuan Shen instantly dissipated.

At this moment, Zhou Tong was also startled, but he frowned and understood the reason: "I see, there are still some prohibitions left in his Yuan Shen?" As long as the memory of the core is touched, it will self-extinguish? ”

"No, what is this?" However, in the next moment, Zhou Tong's face suddenly changed greatly, because the place where the Yunjian Immortal King Yuan Shen had destroyed itself was faintly a crystal clear energy flowing, and it spread rapidly.

Zhou Tong couldn't help but quickly retreat in shock, letting go of this crystal energy.

At this moment, this crystalline energy intertwined in front of Zhou Tong's eyes, and finally formed a path, and quickly spread, and the void emitted one strange ripple after another.

"It's ...... What is this? Zhou Tong's pupils constricted, this kind of thing is too weird.

Could it be that the quasi-immortal emperor on the opposite side left some prohibition on him, marking the person who killed him?

Soon, however, the path grew deeper, a path made entirely of energy, and like ripples in time and space, it exuded circles of fluctuations that turned into a strange web, and at the center of the net was the deep path.

"Not a mark? Rather, a coordinate? Is there any character coming over? Zhou Tong was very nervous, for fear that a quasi-immortal emperor would fly out of this path.

If this is the case, he will definitely use the reincarnation mirror to change the world.

"Whoa!"

Soon, there was a sound of running water from the passage, and at the same time, the sound of countless souls wailing came. This voice was extremely terrifying, like the wailing and crying of countless beings in the heavens and worlds, and Zhou Tong also felt a little numb when he heard it.

At this moment, he seemed to see heaven and earth, ancient and modern, and everything was stained red with blood.

"The sound of the river, the sound of the soul wailing, is the river of the soul!! The Yunjian Immortal King is a person from the Soul River! Zhou Tong instantly understood what the passage in front of him was, it was something that spread from the soul river.

Countless ripples spread out from the side of the Soul River, centered on the place where the Yunjian Immortal King Yuan Shen collapsed, spreading out in all directions, looking like they were exploring and perceiving everything here.

"I see, the energy channel is not a real channel." Seeing this, Zhou Tong was also relieved, and there was no quasi-immortal emperor to come over.

It seems that the immortal kings who should come out of the Soul River have been marked, if someone wants to explore the existence behind the Soul River through these immortal kings, they will touch the prohibition, open up a coordinate, let the power of the Soul River infiltrate, and mark it.

"The power of the soul river is somewhat similar to the power of reincarnation on the reincarnation mirror." The runes in Zhou Tong's eyes flickered, carefully observing those runes and ripples.

But the next moment, suddenly Zhou Tong had goosebumps all over his body, and a terrifying force spread out from the passage of the soul river, like a tide, to make Zhou Tong rise and fall with him.

That is the power of the Soul River, and it wants to pull Zhou Tong into the Soul River.

"Want to explore and tag me? By the way, pull me into the river of souls? It's a pity that you are using this kind of power similar to the power of reincarnation, even if it is a quasi-immortal emperor, it will be difficult! As soon as Zhou Tong's mind moved, he immediately urged the reincarnation mirror in his body, and a reincarnation light enveloped Zhou Tong's body in a blink of an eye.

"Buzz!!"

Suddenly, a soft light flowed from Zhou Tong's body, causing a mysterious aura to permeate his whole body, blocking all the summons and marks of the Soul River.

After being promoted to the Immortal King, Zhou Tong's mastery of the reincarnation mirror has become a little stronger, and he can already take the initiative to use some functions of the reincarnation mirror. Although he didn't know what level this light was, Zhou Tong knew that it was very simple to use it to resist the summons of the Soul River.

"Whoa!"

The soul river rippled, but after all, he couldn't find Zhou Tong, and he couldn't even probe it. As if angry, the roar of the Great Dao came from the other side of the Soul River, a bit like the roar of some strange creature.

But in the end, everything came to an end, and the ripple-like energy channel slowly dissipated, and the fluctuations of the soul river dissipated here.

"This place can't be stayed, although I haven't been found on the other side of the Soul River, it is estimated that the Soul River has locked this location." Zhou Tong sneered, and directly triggered the formation that he had arranged for tens of thousands of years.

In an instant, the entire small world was directly erased and turned into chaos again.