But for some reason, that person was like an illusory projection, no matter how far Yu Ling advanced, he couldn't close the distance between them, and even the other party's figure was still flickering, which looked extremely weird.

"Wait, the spatial structure here is a bit weird......" Xue Qingling stopped and began to carefully sense the spatial nodes around her.

"It's distorted. Yuling also found a clue.

Although the figure seemed to be in front of them, the actual position was not, and it was not possible to draw a straight line between two points, and it required more elaborate calculations.

For example, the two sides are in a twisted space, and although they can see each other from a certain angle and position, they have to spiral forward around the "twist" pattern.

Of course, the spatial structure of this place is far more complex than twist, and there is even the existence of spatial sections, if you don't pay attention, you will go around a dead end.

Although Yu Ling's spatial dao method is infinitely close to Suo You, he has not systematically learned the knowledge of space, and calculates completely based on his own intuition, but Xue Qingling is different, I saw her open a jade slip...... Let's start with the formula.

"Hmm...... It is preliminarily concluded that this place is a composite structure of multi-level space, including various models such as spatial cross-sections, spatial overlaps, and spatial distortions. Xue Qingling's right hand unconsciously drew circles on the surface of the jade slip, which was her habitual movement when she was thinking.

"It's all ...... What. Yu Ling suddenly had a headache, as if he had returned to the fear of being dominated by spatial geometry math problems many years ago, and now this one is even more difficult.

"In fact, it is not difficult, the elders of the clan have specialized in this aspect, and have long deduced a series of formulas, which can be directly applied, but the space is changeable, and there are still many model structures in an unsolvable state. ”

Xue Qingling was dedicated to two things, and replied without raising his head while calculating: "If it weren't for the loss of countless precious materials caused by the Great Melee of the Spirit Clan more than 10,000 years ago, and many experiments had to be done from scratch, otherwise the current level of space theory would never stop here. ”

"So, what level of the five realms are you in now?" Yu Ling asked in passing.

"What does this make me say, it is an ancient division method, maybe it is still used here in Wuya, but in the Daoyu galaxy it has long been not paid attention to, after all, if there is a formula, as long as the data is collected to establish a basic model, the rest can be calculated quickly. For example, if a person in the Suo Yu Realm holds the formula deduced by the Tiancheng Grandmaster, he will have the level of the Tiancheng Realm to a certain extent. Xue Qingling said.

"Okay, then what level of formula are you holding?" Yu Ling asked again after a long speechless pause.

"There is a Hekong Kongzun in the clan who has a good relationship with the master, I forgot what his name is, anyway, I will definitely be able to recognize him when we meet, he gave me most of his research results, and the remaining half, he said that he is not very sure, and he needs to study it again. ”

Yu Ling couldn't help but sweat, he didn't expect Xue Qingling to remember his name now, she was very good if she could remember her name.

"By the way, you can keep these for yourself, but you can't leak them to others, otherwise it will cause big trouble. Xue Qingling handed Yu Ling a few jade slips.

Yu Ling flipped it casually, and he was a little dizzy when he landed, because it was densely packed with various parameters, formulas, spatial cross-sectional diagrams, and basic models, and he could understand that there was a ghost.

“...... Is there a little bit of foundation?" Yu Ling said helplessly.

"It's already very basic. Xue Qingling looked serious.

“...... Is there such an enlightening reading?" Yu Ling had begun to doubt his IQ.

I think he wasn't particularly bad at math back then, although most of the content was returned to the teacher early, but at least it proved that he had no problem thinking, not to mention that after coming to this world, he unexpectedly became a lot more enlightened, and now he was defeated by Xue Qingling with a word.

"I didn't bring the kind you said, what I brought was for myself, you should be able to understand it if you work hard, it's really not difficult. ”

Xue Qingling saw that Yuling still wanted to say something more, so he took the first step and said: "Wait and talk, I'm calculating the spatial curvature of this area, if you don't hurry up, that person may go to the heavenly cave." ”

Yu Ling had no choice but to look down at Yu Jian, he now felt like he didn't understand classical mechanics, so he directly began to study quantum mechanics...... Although I can still understand some when I calm down, most of the content is in the clouds.

It's a pity that there will be no space theory tutorial class in this world, and Xue Qingling, who defaults to your full understanding, is definitely not a good teacher.

I don't know how long it took, the figure in the distance flickered, and it seemed that it was about to disappear from the sight of the two, Xue Qingling finally spoke: "It's basically settled, you follow me." ”

So the two of them moved forward in an extremely strange route, flickering left and right, flickering forward and backward, during which they also avoided two spatial sections, and finally got closer and closer to that person very magically, leaving only a distance of more than twenty meters.

Judging from the back, this seems to be a middle-aged man with a steady step, he is wearing a dark purple robe embroidered with unknown patterns, it does not look gorgeous, but it is deep and graceful, anyway, he does not look like an ordinary person.

"Who is this person?" Xue Qingling asked directly.

Yu Ling couldn't help but be stunned, Xue Qingling didn't hide his volume, but the person in front of him didn't react, it stands to reason that the martial artist's hearing would never be so bad.

"What he can't hear, it's not a real person. Xue Qingling said again.

"What did you find?"

"I've been thinking about the origin of the spatial structure here, and I finally realized that it is not a natural formation, and it is not an illusion. ”

Xue Qingling paused, as if organizing the language: "To be precise, in the real Heavenly Acupoint, the surrounding spatial structure is indeed a bit special, but it is not so complex and chaotic, this is caused by the chaos of time and space, space will affect time, and time will also affect space, you should know, right?"

"Hmm, so?"

"So this is a time and space that existed in the past, and it was preserved in a strange way and presented to us by projection, which is too complicated for me to explain, so you can understand it this way. ”

Yu Ling thought for a moment and said, "In other words, this person is a person from the past, so you say that he is not a real person?"

"Yes, he was real in that plane, but untouchable to us, and we lived in two worlds with him. You can imagine an invisible wall of time and space separating us from him, and if you can touch him, it's equivalent to crossing over. ”

"But space travel is better to say, time travel is directly related to the law of cause and effect, especially to travel to the past, the law system of the whole world will collapse, and the final consequences I can't say, and no one has the ability to experiment. The world of the past may fall into an end, or it may repair itself, and the consequence of repair is to wipe out the variables, so those who dare to challenge the law of cause and effect will definitely die without scum, which is 'disappearing' in the true sense. "Xue Qingling is plain and authentic.

“...... I didn't fully understand it, but I can probably understand what you mean. Yu Ling was a little complicated, because he was also considered to have "crossed over", but fortunately, it was only at the level of space rather than time.

In this way, his consciousness had been brought into the origin wheel of the Yan Clan, and he had seen the picture of the King of the Yan Clan demonstrating the Nine Character Formula, which was also a real time and space that existed in the past, not a simulated illusion?

Anyway, he really couldn't touch anyone at the time, like an alien who didn't fit in.

In any case, some of Xue Qingling's unintentional words did bring Yu Ling a great touch, after all, this was a high-end theory from the Daoyu Galaxy, and a few casual words could open the door to a new world for him.

"Why did that person stop?" As soon as Yu Ling came back to his senses, he found that the purple-robed man had stopped moving forward at some point.

Soon, Yuling understood the reason.

A rich aura of death was emanating from afar, and before I knew it, the Heavenly Cave was already close in front of me.

"It's finally ......"

The purple-robed man muttered, and then made a move that neither Yu Ling nor Xue Qingling expected.

He swept a few hundred meters away, and then jumped into the cave without hesitation.