The Birth Realm is to have some vitality in spiritual power, which can allow cultivators to recover faster after encountering damage, but it is just vitality, and they cannot use these vitality.

And the Death Netherworld is with death qi, and after carrying death qi, the attack will be several times stronger than that of the Immortal Xuan Realm, but the lifespan will be reduced under the influence of death qi, and the long-term erosion of death qi will make cultivators can only take a step forward, or they will die.

Vitality crosses into the human soul, and death crosses into the earth's soul.

Vitality Chu Yun already has, so he doesn't have to worry about vitality. Now there is dead qi left, a green grass here, where the dead qi comes? Even if there is dead qi, Chu Yun may not be able to perceive it, just because of the vitality in his body.

Life and death, it is like a pair of enemies, or pinch when they meet, Chu Yun has already sensed vitality, so even if he enters the Death Netherworld, as long as he has a little death in his spiritual power, it will not work, because the life opportunity he controls will repel these death gases, making it more difficult for Chu Yun to enter the Death Netherworld.

When thinking about how to make the spiritual power dead, the human soul had already been incinerated and refined.

Chu Yun separated a trace of vitality from the sea of knowledge, and after injecting it, he pulled out the human soul and melted into the Yuan Infant of the dantian.

By this time, Chu Yun had already reached the realm of eightfold soul refining.

Looking at the last earth soul, Chu Yun was very helpless, if he couldn't find the death qi, then he could only let it go, but it would be more difficult for him to enter the dead realm.

This is the reason why it is difficult for cultivators to break through the god level, it is not that they want to comprehend life and death, they can't feel it at all at this time, but spiritual power will bring these two powers when there are two realms of life and death.

The opposition between life and death made it impossible for their spiritual power to transform the power of life and death, and Chu Yun's situation was even more difficult, which was the disadvantage of having vitality or death in advance.

If they have it, they can double the strength of the cultivators, but it is even more difficult to cross the two realms of life and death, and it can even be said that they will never be able to take this step, because the power they have will repel the other.

If they don't perceive these two powers, it's okay, the spiritual power will transform itself in their cultivation, but if they feel it, they can't help it, if they can't survive the two realms of life and death, it means that their lifespan will die after reaching the limit.

Chu Yun watched the earth soul being incinerated little by little, and it was almost well, he still couldn't think of a way, so he could only let it go for now, and could only wait until the Shengxuan Realm was consummated, and see if the spiritual power could be converted by itself, so that the spiritual power could bring a little dead air.

After the news that the earth soul had been incinerated, Chu Yun still had nothing to do but pull out the earth soul, if it was not pulled out, then the earth soul would be damaged in the burning of the soul fire.

If a person's soul is damaged, then there will be flaws on the way to cultivation, and when fighting, the opponent will know about this situation, as long as the opponent acts against this flaw, then he will be more passive.

Just as Chu Yun pulled out the Earth Soul, a little gray dot quickly merged into the Earth Soul, and before the gray dot fused in, Chu Yun felt that this was a feeling that was diametrically opposed to vitality, with a strong aura of death.

After the earth soul is pulled out, it must be immediately fused into the Yuan Infant, just like smelting, the soul that has just been burned is best fused into the Yuan Infant, if it takes a long time, the Yuan Infant will reject the soul, such a soul refining will naturally end in failure, and can only stop on the road of cultivation, time does not allow Chu Yun to think too much, he can only fuse first and then make plans.

After the earth soul fused into the Yuan Infant, Chu Yun did not withdraw from the inner vision, he wanted to find out.

Now the Yuan Ying in the dantian, after the soul is fused in, is already like a real person, but it still feels like there are some shortcomings, Chu Yun can't think of what it is, so he feels that something is missing.

Now there is another kind of light point rotating on the side of Yuan Ying, but it is not the origin, it is a little gray thing, and Chu Yun feels dead in this gray point of light.

It's just that when and how this point of light appeared, Chu Yun didn't know anything.

But Chu Yun must understand that there are already many things on his body that he does not understand, and there are two places in Yuanying that Chu Yun does not understand, the water droplets on Yuanying's forehead, and the four drops of blood in Yuanying's dantian. Coupled with the half line of Zhihai Yuanshen's eyebrows, these Chu Yun didn't figure it out, but now this point of light has appeared again.

Looking inside through the point of light, Chu Yun seemed to see a child inside, this child was exactly the same as when he was a child, and the child was also looking at him with a curious face at this time.

Just when Chu Yun couldn't see anything, a message came from the person inside the light spot: "You are my master?"

"Master, what's the matter, who are you?" Chu Yun immediately responded, he was not sloppy in his cultivation, he hadn't figured out the drop of water from Yuan Ying yet, plus the thread of Yuan Shen, since this person had information, then Chu Yun naturally had to ask clearly.

"I am one of your doppelgangers, the result of the dead energy in your body. Death Qi and Life Qi are mortal enemies, your Life is fused by your sea of consciousness, with your mind as the lead, you can no longer have Life Qi, this is a defect in cultivation, in the past, there are strong people who will have both Life and Life Qi, but when you have the second kind, the second kind must be self-conscious, in the form of a doppelganger, because a body cannot accommodate two opposing forces, especially after perceiving one, the other will not appear at all, the only way to solve it is a doppelganger. ”

At this time, many pictures began to appear in front of Chu Yun's eyes, all of which were scenes of some strong people having vitality and death at the same time, except for a column, they all had a doppelganger, and the doppelganger was used as a bridge to carry the second power, so as to achieve life and death.

Chu Yun sensed the clone, he could completely control the clone to do anything, but the clone had just been formed, and he couldn't leave the point of light with dead qi, and he had to improve the strength of the clone in the dead qi before he could leave.

Just like Yin Xie, there are more clones in his dantian, and under his pregnancy, some clones even reach the same strength as him, and when fighting, one clone is completely two against one.

After knowing Yin Xie's doppelganger, Chu Yun was extremely envious, but due to the limitations of the exercises, it was impossible for Chu Yun to have a doppelganger, unless he found another way and figured it out on his own in cultivation.

The clone that suddenly appeared now made Chu Yun ecstatic, as long as this clone had the same strength as him, then his combat power would more than double.

Next, Chu Yun got to know this clone well.

Knowing that the doppelganger was in the Ghost Gate Pass, it had already begun to form, but at that time he didn't find out, the Ghost Gate Pass was full of dead air, but he used the pressure to fuse the Tianmu Origin into the Sea of Knowledge, so the dead qi he absorbed in the Ghost Gate Pass was naturally driven out, but the dead air was under pressure, and it couldn't leave the body at all, so it could only be hidden in the body, and with the pressure, it became Chu Yun's doppelganger.

It's just that Chu Yun has already comprehended the vitality, and this hidden dead qi will naturally not be discovered by him, the confrontation between life and death, his vitality is greater than the dead qi, so naturally he can't find it.

The doppelganger was formed in the Ghost Gate Pass, grew stronger on the Huangquan Road, and when it arrived at the Hades Palace, the doppelganger had already become conscious, but it couldn't compete with the vitality, so Chu Yun didn't find out.

Until Chu Yun entered the Broken Soul Cliff, it was full of dead air, and when Chu Yun passed through purgatory, those who died in purgatory, with unwilling emotions, under the influence of the Broken Soul Cliff, slowly grew their clones again.

In the end, when Chu Yun was refining his soul, the consciousness of the doppelganger was completed, and without Chu Yun's knowledge, he crossed into the earth soul and entered the dead qi, laying a good foundation for the two realms after Chu Yun.

However, despite the appearance of the clone, Chu Yun still couldn't comprehend the death qi, but he could make the clone carry the death qi, and he controlled the clone, and then played a role in controlling the power of these two opposites.

Chu Yun also knew that the way this clone absorbed the death qi was the same as the vitality of the sea of knowledge, it was the purest death qi between heaven and earth.

Of course, if in the fight, you can also release these dead qi to have the effect of hurting the enemy, if you use it properly, the dead qi will hurt and the vitality will be restored, and Chu Yun will have another means to defy the sky in the fight.

Chu Yun didn't expect that he would actually generate a clone in such a coincidence, or a clone that controlled the death qi.

Exiting the inner vision, Chu Yun looked up to the sky and laughed, it seems that it is true that they all say that wealth and wealth are in danger.