The most important thing to summon the undead in the Netherworld is to wait patiently.

After the ordinary undead enter the netherworld, they will directly integrate into the land of the netherworld, and be transformed into pure yin qi nourishment by the underworld, nourishing the netherworld.

Even powerful undead, if they are not fully prepared before death, after entering the Netherworld, they will gradually be assimilated by the Netherworld and become a part of the Netherworld.

Only those beings whose divine souls have cultivated to a higher realm, before they die, have made all the preparations and layouts, and after death, the undead will not dissipate and assimilate, but will sleep in the underground underworld of the underworld.

Unless it is a very special situation, it will not wake up. In the process of sleeping, they will even automatically absorb the yin spirit qi in the underworld, and constantly recover themselves.

Wu Qi of the Witch Spirit Clan is obviously such a strong man.

After Yang Yi heard about some things about the Heavenly Soul and the Earth Soul, he couldn't help but think about it, feeling that this Wu Qi had a certain possibility that he did it on purpose.

Of course, even Yang Yi himself didn't understand why such a bizarre idea occurred.

Everything that needs to be done has been done, and the next thing is to wait patiently.

They still have more than a month to go, and if Wu Qi's undead spirit has not been summoned back two days before the Earth Fire Nirvana Pool closes, then it means that this summoning is over.

The blood oath contract will also be directly invalidated, and the undead curse imposed on Ling Han Zhenren and the Fire Spirit Fairy will naturally disappear with the wind.

If that's the case, then it would be easier.

Anyway, they are waiting here, and as long as no other undead break in, the three of them don't have to do anything else.

Yang Yi saw that Wu Zhenzhen was guarding very seriously, and he simply began to ponder the "Melting Fire Soul Refining Technique".

This is an exercise that does not know the level, whether it is stronger than the Heart Sutra of the King of Fudong, Yang Yi is not sure.

However, one thing is certain, this exercise, since it comes from the Wuling clan, is naturally able to cultivate the soul, and unlike the Heart Sutra of the King of Fudong, the initiative is the cultivation of the spirit, and this exercise obviously pays more attention to the cultivation of the soul.

The soul is obviously more powerful than the spirit, which can be clearly seen from the methods of the previous Wuyang Wu Zhenzhen brother and sister.

"Melting Fire Soul Refining Technique" has a total of four levels of exercises, from the soul, true soul, yuan soul, and then to the star soul.

What made Yang Yi feel strange was that in the Heart Sutra of the Immovable Ming King, the fourth realm should be the Earth Spirit Period, but in this exercise, it became the Star Soul Period.

According to what Wu Zhenzhen told him before, above the Star Soul Period, it should be the Heavenly Soul Period.

Once a person from the Witch Spirit Clan cultivates a Heavenly Soul before the age of fifty, he will be able to enter the Heavenly Witch Clan in the Nine Heavens Star Domain and become a true member of the Heavenly Witch Clan.

Yang Yi figured out both sides of this technique from front to back, and found a more interesting situation.

And this situation does verify what Wu Zhenzhen just said, it is a practice that can be advanced.

It seems that this exercise only has these four realms, and as long as one of the conditions is met, it can be cultivated repeatedly and repeatedly.

This condition is to find a fire suitable for soul absorption, let the soul fuse the fire, and make the origin of the soul advanced.

Of course, the exercises are still the same exercises, and they have not changed, what has really changed is the origin of the soul.

If the soul origin is advanced, this exercise will be advanced, and it will start cultivating again, and it is still credible.

Looking at it this way, this "Soul Refining Technique" is really extraordinary.

The four-layer exercises come with four different soul path control secret methods.

The soul period is "Soul Fire", the True Soul period is "Soul Forbidden", the Yuan Soul period is "Soul Fu", and the Star Soul period is "Star Control".

"Really real girl, this exercise looks good, haven't you practiced?"

Yang Yi asked Wu Zhen curiously.

"Naturally, I cultivated, but then I gave up. I once fused a spirit-level fire according to the method of melting fire mentioned in it, and found that this exercise can indeed improve the level. However, its drawbacks are also obvious, that is, after cultivating to the Star Soul Stage, it can no longer be improved, so it gives up. ”

Wu Zhenzhen replied.

"So, really girl, you have cultivated this exercise once before and reached the Star Soul Stage realm?"

Yang Yi asked in surprise.

Wu Zhenzhen hesitated for a moment before saying, "It's not just me, my brother has also cultivated. In fact, because the talents of the two of us are a little inferior in the clan, we thought about improving our talents through this method. We only cultivated the first layer of this exercise, and after completing the fire melting, we changed to the core practice of our own clan. ”

"So, the talents of your two brothers and sisters have really been improved after the cultivation of this exercise?"

Yang Yi couldn't help but ask again curiously.

"Yes. "Wu Zhenzhen.

"Could it be that you two brothers and sisters are really not interested in this kind of exercise? After all, if according to the exercise, as long as you keep fusing the fire, it can improve its level infinitely?"

Yang Yi asked puzzled.

Wu Zhenzhen smiled bitterly and said, "How can there be such a good thing in the world? The lifespan of the Star Soul Stage is also limited, the longest is no more than 1,200 years. If our clan can't cultivate to the Heavenly Soul Stage before the age of fifty, we will completely lose our qualifications to enter the Nine Heavens Star Domain. ”

Speaking of this, Wu Zhenzhen paused, his expression a little complicated.

"The environment of the barren starry sky is far from being comparable to the Nine Heavens Star Domain. The environment there can only support cultivation to the Heavenly Soul Stage at most, and after reaching the Heavenly Soul Stage, it is impossible to improve again. Just like your Divine Martial Realm, the Heavenly Star Realm here should be the end, right?"

"Not bad. Yang Yi nodded.

"If there is a technique that has been stuck in the Earth Star Realm, as long as you can continue to find better treasure fusions, you can repeatedly improve your qualifications and talents, are you willing to cultivate?"

Wu Zhenzhen suddenly changed the topic and asked Yang Yi.

Yang Yi wanted to nod, but after pondering for a moment, he couldn't help but smile bitterly and shook his head.

This seems to have great benefits, but after careful consideration, you will find that it is a big hole at all.

The treasures in this world are limited, and the treasures that are fused for the first time are at the spirit level, then the second time they are fused, this treasure is bound to be a grade higher than the spirit level.

After the fusion is successful, the difficulty of the exercises will also increase geometrically compared to cultivating again.

The lifespan of the Earth Star Realm is limited, and if you do it all over again, who dares to guarantee that you can cultivate to the original realm again?

It's no wonder that Wu Zhen really has such a technique that can continue to improve, but he didn't practice it.

However, for Yang Yi, he didn't have so many scruples.

Anyway, it's just a matter of recultivating his soul, his realm has reached the primordial god realm, and recultivating his soul doesn't have much impact on his own realm.

He is a human race, unlike the witch spirit clan who specializes in cultivating souls, only martial souls can affect his realm.

Yang Yi couldn't help but practice according to this exercise.

He has now reached the peak of the Yuan Spirit Stage, and he has transferred to the "Melting Fire Soul Refining Technique", and the exercises of the first three layers are almost effortless.

In two hours, he completed the transformation of the first layer.

It took more than two hours to stop and ponder the second layer of exercises, and then after a little half a day's effort, the second layer was also successfully transferred.

A day later, the third floor was also renovated.

In two days, after he completed his cultivation, he had reached the peak of the middle stage of the Yuan Soul Period.

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