However, even though it was so useless to find out from the Sea of Memories Breaking the Dark Wind Technique, Xue Zhen still didn't give up at this time, at this moment, he transferred the Purple Xuan Sword out of the storage ring, and after a little thought, soon, a Breaking Dark Wind Technique appeared in his palm, and the Purple Xuan Sword in his hand slammed at the Dark Wind that was leaning in front of him.

With the fierce slash embedded in the sword arc of the Breaking Wind Technique, he slashed away, and immediately nearly a hundred black tornadoes were stopped by the sword arc and slashed, with the flash of those half-moon inverted swords, a small part of the area in front of him remained "clean" for a short time, however, then other dark winds were added, and the black mist was filled again, but Xue Zhen still showed a rare smile of relief.

"Haha! Although such efficiency is not enough to wipe out these harmful winds on my own, but it is man-made, since I have encountered this matter, I will definitely not turn a blind eye! I will never trigger that thunder tribulation until it is resolved!" Xue Zhen shook his gray robe and laughed.

Although Xue Zhen was very excited and happy at the moment, he still did not lose his cautious style, and in the face of the dark mist that was still slowly expanding, Xue Zhen's figure also retreated a lot. But Xue Zhen soon fell into another tangle.

"Even if you can solve these things in the underworld, if you can't find a specific source to suppress or even eliminate them, I'm afraid it will always be a disaster!" Xue Zhen thought secretly in his heart at this moment.

When he returned to this place, and even when he accompanied Yuan Huan here, Xue Zhen once wanted to find out where the source of these dark winds was, but he never succeeded.

Obviously, such a large area of the wind of the underworld invading the general interface would never be a matter of no reason, and at this moment, Xue Zhen released the Earth River Forbidden Formation on a small sand pile about a thousand zhang away from the Xuanhei Mist, and he sat cross-legged in it, closing his eyes slightly, and at the same time as the divine thoughts were sent, the pair of Xuan Tiancong's ears also focused their attention on the Xuanhei Mist.

Time has not been fast or slow, Xue Zhen doesn't know how long he has sensed, the more than 100,000 acres of black mist over there, together with the ground that reaches a depth of fifty zhang underground, Xue Zhen can indeed find a few strange places, but when the divine mind sweeps away some realities, it is not the same as the general sense of emptiness, and the mind and even time consumed are almost exponentially increased.

However, Xue Zhen really didn't think much about the time spent, and still sank into it like fascinated, and in the end, Xue Zhen's eyes suddenly opened wildly, and a little bit of crystal light came out.

"Haha! I finally found the key to it, and it was really the interface crack, if I wasn't mistaken, the other side of the crack should be where the underworld is located. Xue Zhen muttered to himself.

Xue Zhen didn't notice that it took him almost thirty years to take him so much to investigate, and there were naturally dozens of groups of monks coming and going along the way, but everyone didn't notice Xue Zhen who was simply disguised, they were just thousands of miles away or even thousands of miles away, sensing the strange and abnormal wind raging here, so they avoided it from a distance, no matter how high or low their cultivation was, and this qiē, Xue Zhen didn't know anything about it because of his preoccupation.

However, that joy only lasted on Xue Zhen's face for a short period of time before it calmed down completely, and Xue Zhen then secretly thought about it again.

"If you want to forcibly tear open this interface crack, it won't be too much of a problem, I should be able to do it, but if the interface crack that was completely torn apart by external forces is healed, and the tearing point seems to be still on the underworld, it won't be so easy!"

According to Xue Zhen's understanding, whether it is a spatial crack or an interface crack, once it is torn apart, it can basically heal on its own in a short period of time, this time is a few breathing hours, at most one or two hours, and after healing, unless it is torn many times in a row, it is difficult to see the "flaws" even if it is some great powers.

It is precisely because of this that some people want to enter other interfaces, in addition to the usual descending immortals, the most direct way is to tear the corresponding space or interface cracks, and pass through, but there is no hint from other people going back and forth, who can know what interface the other side leads to, which is not much different from the suicidal game.

However, to repair the constant interface crack, I am afraid it is not so simple, without some materials to mend the sky, it is almost an impossible task.

In an instant, he remembered so much from the sea of memories, but Xue Zhen just shook his head again and again, these memories were not worth mentioning to him now.

"Could it be that this matter is just left alone?" Xue Zhen asked himself.

Obviously, this was by no means Xue Zhen's original intention, but even though Xue Zhen now has the ability to enter and explore, if there is no way to stop the interface crack that is a disaster, then it will be in vain.

At this moment, Xue Zhen fell into a faint contemplation again, but after a short period of reflection, Xue Zhen remembered a rumor that might be useful.

Spatial cracks and interface cracks are almost all formed by the power of the law, such a strong collision of the power embedded in heaven and earth, however, there was also a collision of the power of the law that monks had witnessed, which could make the interface cracks overlap with each other, even if this overlap is relatively weak, however, the overlap mentioned in the rumors should be able to solve the incident here.

However, the space or interface crack is the collision of the power of the law, which is strongly torn, and once the excitation is wrong, it will obviously cause the risk of the interface crack being magnified again, which is naturally what Xue Zhen does not want to see, and it is also impossible to predict this method.

At this time, Xue Zhen sensed from a distance a group of low-level monks of three people shooting towards him, but they quickly chose to take a detour, Xue Zhen frowned secretly between his eyebrows, and hummed softly:

"Anyway, Alum City is not far from here, if there are corresponding repairs in the city, it would be best, if not, Xue Mou can only try such a method that is not a method!"

When Xue Zhen said this, he stared at such a place where the dark wind was still swaying and raging, and with a shake of his head, he immediately harnessed the retreat, made a detour, and then galloped straight towards Alum City, which was not too far away.