Zheng Qing naturally could not use his own talisman gun and talisman bullet to bombard his clone's forehead.
But he was also very interested in this kind of magic problem of low-dimensional interference and high-dimensionality, and the professors in this class happened to be one of the few wizards who could answer this question.
Similar to the other two courses on Saturday afternoon - the principle of convergence and Albusdo's guess -, the professors of the Dimensional Introduction course also come from relevant departments.
Therefore, this professor learned more about a student with a special identity in his class.
After hearing Zheng Qing’s question, he looked at the young wizard meaningfully, and did not speak directly. Instead, he walked down the podium, came to the wall, clenched his fists, and hit the center of the wall with a bang.
The movements are straightforward.
Click!
The entire classroom was stunned by this punch.
A small dot suddenly appeared on the white wall. With his fist point as the center, the spider web-like cracks spread rapidly around, and an unknown crack sound was made in the wall, as if the house would collapse in the next second.
Zheng Qing, who was thinking about it all, was stunned.
The other seniors were not much better than him. Everyone was speechless and stood up subconsciously. Some moved towards the door of the classroom, some held the table and seemed to hesitate to get into the bottom of the table, and some people half-raising their arms, as if they were hesitating whether to ask the professor what had happened.
A group of elves in gray robes rushed in quickly, but saw the wizard standing in front of the wall waved his hands to them.
"It's all teaching arrangements, let's go down."
The professor's tone was relaxed, as if he had not smashed the classroom wall just now, but he just pressed a mosquito to death - but this "normal" attitude also made the classmate quietly relieved. While speaking, the professor also turned a chair beside him into a yellow-skinned lion and threw it out the door.
The elves hesitated, looked at each other, and finally quit the classroom honestly.
The sounds of yellow-skinned lions, school workers, and other classmates in the classroom were vaguely heard in the corridor, but in the end no one went into the classroom again to see what was going on.
soon.
The professor, who had been busy in front of the wall for a while, turned around and revealed the "masterpiece" behind him - he drew a painting on the snow-white wall, describing a mountain that was slowly collapsing after being hit by a giant wooden stick. The place where the punch just hit was the place where the wooden stick came into contact with the peak, that is, the core of the collapse.
In the whole painting, there are giants, wooden sticks, mountains, etc., all the pictures are on the wall, with only length and width.
Only those collapsed cracks have a true and true "height".
"Did you understand?"
The professor's eyes slid over the students one by one. Seeing that everyone was thinking, nodding with a very small amplitude, without waiting for anyone to speak, he explained to himself: "... Just like the sentence I repeatedly emphasized in this class - when we cannot deal with an unknown concept, we might as well summarize this concept into a dimension - this induction process can be understood as "convergence" or "dimensionality reduction".
Dimension reduction is the easiest and straightforward way to make low-dimensional understanding of high-dimensionality.
A classmate just asked about the interference effect of low-dimensionality on high-dimensionality. I want you to see this painting. You can easily substitute this painting into a two-dimensional world, so everything in the painting should theoretically be two-dimensional. But my punch..."
His fingers pointed at the center of the fist mark.
Knocked.
"——This punch gave this painting a 'height' that it never had, making the war in this two-dimensional world a 'block' effect, as if it broke through the shackles of the law and took effect on a higher dimension. Similarly, I can wipe a trace of true giant blood on this giant, or embed an obsidian in the place where the land collapsed, which will cause the aftermath of this war that originally occurred in the two-dimensional world to spread into the three-dimensional world."
"And this is my first answer to the question Zheng Qing just now." The professor walked back to the podium slowly and picked up his pen and wrote a big word "one": "...If the low-dimensional world wants to leave traces in the high-dimensional world, it must go through the "high-dimensional" method. Otherwise, just like that painting, if you leave a three-dimensional pattern on the canvas, it is just a visual illusion, just an illusion... We can say that illusion is an effective way to understand higher dimensions, but we must never confuse the distance between illusion and reality."
Just like a blood talisman.
Zheng Qing muttered silently in his heart, suddenly a little curious about his current state. In theory, he was just a real low-level wizard, but on the other hand, he had many "high-dimensional characteristics".
He couldn't help but turn his head again and glance at the painting on the wall.
“——But on the other hand, the impact of the high-dimensional world on the low-dimensionality is indeed uncontrollable!”
On the podium, the professor raised his voice slightly and increased his tone. Zheng Qing quickly moved back his gaze, but saw that the professor picked up a piece of mulberry paper at some point and was showing it to the left and right. When he saw the boy turn his head, he snapped his fingers.
A drop of ink appeared out of thin air, fell on the white paper, and quickly spread out.
"...A drop of water from the three-dimensional world falls into the two-dimensional world - here we use a piece of paper instead - will naturally spread without considering resistance. If the paper is infinitely thin until it has no height and becomes a real two-dimensional, then the drop of water will spread infinitely until it fills the entire two-dimensional world.
To understand it in a common way, this is the 'dimensionality reduction strike'.
A little existence or concept in the high-dimensional world falls into the low-dimensional world. After collapse, the collapsed energy will fill the entire low-dimensional world. From the perspective of the two-dimensional world, it is probably equivalent to a point in the world suddenly bursting out incredible huge energy, releasing matter that can fill the entire world..."
Zheng Qing subconsciously thought of the "Big Bang Theory" he learned in high school. The drop of water that the professor just dripped on the paper was very similar to the "pole" in the Big Bang Theory.
"——This is the uncontrollability of cross-dimensional influence." The professor rubbed the paper contaminated by a ball of ink and threw it into the trash can. He glanced at Zheng Qing and said earnestly: "So, I said so much to remind you not to be ambitious and easily touch the power you cannot control. Otherwise, your unintentional action will destroy a world."
Zheng Qing's mind flashed through the red light from the nearly melted two-dimensional evolution laboratory during the hunting competition of the first school, flashing through the figure of Rano, chromato spitting blood and flying backwards under the night, and flashing through the scene of the inner city of the Black Prison cut open by a slender red pillar.
He sighed slightly.
Rub your ears hard.
The blue dragon hanging on his ear was left to kneading without saying a word.