"This is the Demon Cave?" Looking at the black mist cave in front of him, Tuoba Aoyu's face was shocked.

The so-called magic cave of the elder is a mysterious big hole, the entrance of the cave is like the center of the storm, the wind blade is whistling, tearing the air, cutting all tangible substances, there are bursts of ghosts crying wolf howls in the cave, the yin wind is miserable, and the situation is extremely strange.

Mu Yuyao stared at the entrance of the cave for a long time with a solemn face, and then said coldly: "I don't know the origin of the Demon Cave, it has existed since I was accepted as a disciple by Shizun, every year, Shizun will send someone to guard the Demon Cave, what is in the Demon Cave, Shizun has never told us, but just told us not to enter." ”

Tuoba Aoyu stared at the Demon Cave for a long time, and said in surprise: "Third Senior Sister, don't you need to go into the Demon Cave?"

"No, just stay outside the cave, every once in a while, there will be a vision inside the cave, we just need to stay here and wait for the master to come." Mu Yuyao shook her head.

Seeing Mu Yuyao's cold eyes, Tuoba Aoyu resisted the thought of continuing to ask in his heart, casually found a big stone outside the entrance of the cave, sat down cross-legged, and began to cultivate.

In another direction, Mu Yuyao looked up at the sky, not knowing what Lu Dao was thinking.

"The master said to help me break through the battle spirit, but I don't know what kind of spell the Dao taught me. Tuoba Aoyu thought of the meeting gift given to him by the elder master, and his mind sank into his mind, and soon, his face showed surprise.

"This spirit transformation technique is really unpredictable, and it can actually be cultivated to create a clone. Glancing at the spirit transformation technique, Tuoba Aoyu was taken aback in his heart.

After all, the spirit body is only seventy percent of the strength of the body, which is still within an acceptable range, but this doppelganger is far from a means that ordinary war spirit realm cultivators can control.

The doppelganger, with independent thinking and thinking ability, is equivalent to the existence of another "monk", but its will is subordinate to the ontology, and it acts according to the ontology, and if the ontology does not ask for it, it can do things according to its own will and cultivate.

However, there is a huge danger in cultivating the doppelganger, that is, facing the doppelganger's backlash, once the doppelganger's cultivation exceeds the ontology, it is very likely to cause the doppelganger to backlash and swallow the body, so that the doppelganger's will dominate everything, this situation is extremely terrifying, once this is really the case, then the will of the ontology will be completely annihilated, and what will appear will be another new will.

In this way, there are still many monks who are eager to practice the doppelganger technique, because, one more doppelganger often means one more life, but the technique is precious, although it is not as scarce as the world after arriving at the sect, but the sect's great art of establishing the sect will not be easily passed on to the disciples, unless it is the kind of disciple who has made great contributions to the sect before he has the opportunity to learn this technique, which is why Han Jie will be unwilling and jealous when he sees Tuoba Aoyu after getting the spirit transformation.

There are three techniques in the Great Dao Sect's vein technique, one of the three techniques is the spirit transformation technique, and the other is the deification technique, and the last is the Great Dao technique.

The three techniques are respectively controlled by the three veins, among them, the main vein is in charge of the most important avenue technique, and cultivating the avenue technique can allow the monk to comprehend the supreme avenue and step into the realm of the tong qi faster after breaking through the triple battle spirit after the baptism of the heavenly thunder tribulation.

In battle, the clone and the body are integrated, and the combat power is superimposed, and the power is infinite.

Cangmai Palm Divine Transformation Technique, a monk who cultivates Divine Transformation Technique, has a strong physical body, can shake brute weapons, and a monk with high cultivation talent can even cultivate the Divine Transformation Technique to the point of physically fighting everything.

The three techniques are extremely powerful, and they are the real great techniques of the Great Dao Sect.

"The master taught me the spirit transformation technique, I am afraid that I have the intention of letting me participate in the spirit transformation technique and break through the battle spirit realm, isn't it, this spirit transformation technique can also help me melt my soul?" Tuoba Aoyu's purple eyes lit up, thinking about the intention of the elder.

"Yes, since the condensation of the spirit body requires soul melting, then, the cultivation of the doppelganger also needs soul melting, in this way, the two have something in common, and the spirit transformation technique can indeed help me break through the battle spirit realm. ”

Tuoba Aoyu sorted out everything in it and was ready to start cultivating the spirit transformation technique, but at this moment, his right pupil, which had become the same as ordinary people's eyes, suddenly flashed with a strange red light, and an inexplicable palpitation appeared in the bottom of his heart slightly abruptly, Tuoba Ao Yu was shocked in his heart, and he didn't understand what was going on, so he immediately stopped practicing the spirit transformation technique.

Just after he stopped cultivating the spirit transformation, the red light in his right pupil flashed, slowly faded, and finally returned to normal, as if nothing had happened.

Touching his chin, Tuoba Aoyu's eyes showed a look of thought, and the red pupils would not warn inexplicably, there must be something threatening his life, but he didn't seem to touch it......

No, the red pupil only ran out to warn when he was practicing the spirit transformation technique, so in this way, is there anything wrong with the spirit transformation technique? Or ......

The fierce reaction of the red pupil completely cut off the idea of immediately cultivating the clone in Tuoba Aoyu's heart, and he decided to try again to see if there was really a problem with the spirit transformation technique.

So, he silently recited the mantra of the spirit transformation technique in his heart, his mind turned, hugged Yuan Shouyi, and began to comprehend, sure enough, when he was practicing the spirit transformation technique, the red pupil once again emitted a strange red light, when Tuoba Aoyu stopped practicing the spirit magic, the red pupil instantly returned to normal, and so on, Tuoba Aoyu finally determined in his heart that there was indeed a problem with the spirit transformation technique.

With a flash of his eyes, Tuoba Aoyu groaned in his heart, and said secretly: "Could it be that there is any fatal flaw in the spirit transformation technique?" However, if there is really a flaw, there is no reason why Shizun he should not tell me, or does Shizun not even know about him?"

Tuoba Aoyu buried his doubts deep in his heart and decided not to practice the spirit transformation technique for the time being, but he could learn from the methods related to soul melting, and successfully melt souls as soon as possible and break through the battle spirit realm.

Cultivation has no years, just like that, Tuoba Aoyu has been cultivating outside the demon cave for two months, in the past two months, he has learned from the spirit transformation technique, and he has gained a lot, and his grasp of the fusion of the seven souls is much greater, but he still can't perfectly fuse the seven souls together, they are still very repulsive to each other, and the sense of independence is still very strong.

It wasn't until the third month that Tuoba Aoyu finally solved the problem of soul melting, and he began to prepare to attack the Battle Spirit Realm.

Taking a deep breath, Tuoba Aoyu first mobilized the qi and blood of his body, and after slowly running in it for a great week, he probed his mind into his mind, slowly extracted the seven souls, and used the soul fusion recorded in the soul transformation technique to slowly fuse the two souls of the seven souls together.

Laugh at!

The two souls fused together, a puff of white smoke rose, a weak and inaudible hiss sounded, Tuoba Aoyu did not dare to be careless, and his mind guided the third soul to merge into it, and the three souls blended, among which there was more white smoke, and the hissing sound was even greater.

At this moment, Tuoba Aoyu's forehead had begun to sweat, and beads of sweat the size of beans rolled down his neck.

He had seen Ning Wushuang draw and melt his soul on the platform of life and death, although the difficulty was not small, but he found that the difficulty of his soul extraction and soul melting was far from being comparable to Ning Wushuang, who broke through that day, one soul by one and one soul was integrated into it, and soon, all the seven souls were fused together.

At this time, the soul melting was barely completed, and Tuoba Aoyu breathed a sigh of relief in his heart.