This is the last trick that Yihang can think of: the return to the source.

This is an assumption in the Manuscript of Origins. "Tracing the Origins Manuscript" is the most difficult one among the three books brought by the traverser, the other two are "The Dual Cycle of Body and Soul" and "The Yuan Method", Xiang Yihang and Qin Ruxue have been practicing.

The only thing that has made the slowest progress in learning is this "Manuscript of Origins", because it is not a cultivation exercise at all, but an analytical assumption of all things in the universe, which tries to find out the common characteristics of all things by deconstructing objective things, so as to achieve the purpose of returning to the source, and then find out the essence of the universe and understand the truth of the universe.

The genius who created this "Tracing Manuscript" was destroyed by lightning at the moment when he was close to success.

The last time Xiang Yihang and Qin Ruxue entered the realm of selfless double cultivation, they had a brief epiphany about the controllability of time and space, so it inspired the memory image of the author of the "Tracing the Origins of the Manuscript".

At that time, the memory image left by the author reminded Xiang Yihang that Tianwei must not commit it, otherwise it will be wiped out, so he shouted that he, a destined person, must be careful and careful when practicing the "Tracing Manuscript" to explore the truth of the universe, not to be discovered by Tianwei, or he will definitely follow in his footsteps.

During this time, Xiang Yihang was busy with affairs and his strength was not enough to explore the so-called truth of the universe, so he was not very attentive to the cultivation of the "Tracing Manuscript".

However, now because this unknown dark liquid oil and salt do not enter, the five elements of yin and yang are all helpless, and this thing seems to be a bit of a sign of restraint with space, Xiang Yihang has no choice but to forcibly use the return to origin method mentioned in the "Traceability Manuscript", hoping that there will be a chance of a miracle.

When Xiang Yihang's True Qi Carrier returned to its origin and traced back to the source information to cover the stone where the black liquid was, a miracle really happened.

The black liquid like molten iron no longer swam between the ores to absorb the active components of the minerals, but swam out of thin air along the direction of Xiang Yihang's information transmission.

When the liquid came to Xiang Yihang, it turned into a large round plate, intercepting all the information about Xiang Yihang.

Xiang Yihang was sure that the black substance had no breath of life and was not a spiritual thing, but it could absorb the origin information about space and matter that he sent.

The disc made of black liquid was erected in front of Xiang Yihang, and Xiang Yihang kept typing out the information of returning to the source with both hands.

One person, one thing, just like that.

After a while, Xiang Yihang's body was already soaked, and his body was trembling slightly.

Because after all, he only has the cultivation of the foundation building period, although the cultivation of the "Body and Soul Double Cycle Technique" is a top-level exercise, and the "Xuan Yuan Method" condenses the true qi, making him stronger than the normal foundation building period monks, but the foundation building period is the foundation building period, and it is really very reluctant to use this return to the source method, if it were not for the idea that quantitative changes cause qualitative changes, he would have given up long ago.

The last time he was almost sucked dry by the heavenly fire in Qilian Mountain, it already made him palpitate, but fortunately, a miracle happened later and let him escape. But he knew that people can't die every time.

Just when he couldn't hold on and was about to give up, the black disc no longer absorbed his information, but suddenly approached him.

The disc glowing with black light first touched his index fingers, because it was the index finger that made the handprint.

As soon as the liquid disc touched the two index fingers, it quickly covered the index fingers of both hands as if magnetically, first spreading over the palms and backs of the hands, then over the wrists, arms, then on the face, chest, and finally on the whole body.

At this time, Xiang Yihang was like being covered with a close-fitting black film.

The four of them, including Qin Ruxue, couldn't help but be surprised when they saw Xiang Yihang being painted all black, which was beyond their comprehension.

Although I have seen similar liquid metal men in the movie "Terminator", and I have also seen the protagonist in "Black Empire" who suddenly gets covered in some kind of liquid after eating a blue pill and then returns to the real world, it is science fiction after all.

Now that such an incredible thing is actually happening in front of their eyes, the four of them suddenly feel ridiculous.

Xiang Yihang saw that he was covered by this unknown black liquid, although he was a little panicked, but he didn't feel any discomfort.

Xiang Yihang took a pill, then sat down cross-legged and began to think about the strange book "Manuscript of Tracing the Origin" from the beginning. And it's thinking and practicing at the same time.

In the process of thinking and practicing, he suddenly found that his thinking was particularly sensitive and his learning ability was particularly strong.

This feeling has not appeared for a long time, and the first time it appeared was when Xiuzhen had just succeeded, and his thinking ability was transformed, and his learning ability and memory were qualitatively improved.

Now this sudden jump in learning ability has reappeared, which has surprised Xiang Yihang. If you go on like this for a long time, won't you go against the sky?

Xiang Yihang was blessed to the soul, and after understanding the "Tracing Manuscript", he immediately began refining the weapon on the spot.

He transmitted Qin Ruxue's voice, took out all the two mica and flying stones, and then took out the previously selected refining materials from his storage ring and put them underground, and swept his mind to collect the high-grade refining materials in the exhibition hall together.

He was to strike while the iron was hot and begin refining on the spot.

First practiced the flying sword, before he wanted to use the Xuanjin essence as the main material to refine the flying sword for him and Qin Ruxue again, but due to the matter of the Immeasurable Dao Lord and others and Qilian Mountain's excavation of the heavenly fire, it was delayed.

He shouted out Tianhuo, Tianhuo had eaten a lot of energy crystals before, and at this time, the first transformation had been realized, the flame had grown a circle, and the temperature in the center was also a little higher.

Tianhuo saw that Xiang Yihang's whole body was covered with black armor, and it was not surprising that he learned that Xiang Yihang called him to smelt mica, flying stone and several refining materials, and it didn't shirk it, after all, he had just eaten enough and had grown up.

Xiang Yihang was extremely sober at this time, and his comprehension of the "Foundry Cultivation Manual" was further advanced, especially after deeply mastering the "Traceability Manuscript", he had a deeper understanding of "space is controllable, and all things have a source", and the idea of "Casting Cultivation Manual" was also in line with the principle of "Traceability Manuscript", so Xiang Yihang did not pause at all this time when refining.

Tianhuo quickly finished refining the minerals that Xiang Yihang couldn't smelt, and then cooperated with Xiang Yihang to cast the body.

With the help of Tianhuo, Xiang Yihang more calmly integrated his comprehension of the origin of space and matter into the body.

Soon, the first flying sword was refined, and the appearance was not much different from the first time he and Qin Ruxue refined, but the specifications were larger, and the appearance was more generous and luxurious.

He didn't try it either, he threw it directly to Qin Ruxue, he had a feeling that this was the best flying sword he had ever refined.

Then the second one was completed, and it was paired with Qin Ruxue's, which was refined for himself.

There were still a small amount of flying stones and flowing mica, and he continued to refine them, refining a flying sword for Cui Tong and Qiao Yan each.

At this time, the Flying Stone and Mica had been used up, and these two refining materials, according to the "Casting Cultivation Manual", were the top refining materials among human-level cultivators.

However, although these two top-level materials are gone, there is no shortage of materials such as Xuanjin Essence here, and there are several things that are better than Xuanjin Essence.

Xiang Yihang took advantage of the superhuman state at this time to seize the time to refine, not only refining a set of each of Lan Xuan and Su Yuling's previous weapons, but also refining more than a dozen willow leaf flying knives and the like.

Just as Xiang Yihang wanted to continue refining the weapon, the black liquid armor on his body began to fade.

How did it cover it before, and how did it fade back now?

After a while, all the black liquid on Xiang Yihang's body retreated, and then turned into a black snake again, drilled a few times in the space around Xiang Yihang, and finally flew straight into the sky, drilling out of the ceiling above his head and disappearing.

Not only Minister Wang and the others couldn't see it anymore, but even Xiang Yihang and Qin Ruxue's divine thoughts couldn't be swept away, as if that thing had suddenly arrived in another time and space.

"Hey, don't go!" Xiang Yihang was anxious.

He knew the magic of this thing deeply, he just put on the leather coat made of this black liquid for a while, and suddenly his brain opened, not only in the understanding of space and all things to a higher level, but also took this opportunity to refine a few weapons in his hand.

He had a feeling that it would be difficult to refine such an excellent flying sword in the future.

However, this thing is gone, and who knows where it is in now, and where to find it in the future?

"Forget it, be content!" Xiang Yihang finally shook his head. I also lost the interest in refining.