Zhu Xuan smiled slightly, looking very mysterious, "Well, anyway, this place is temporarily safe, so I'll tell you about it."
Su Xiaoyun and Shi Yitong looked at each other with curious expressions. Only I get a headache.
Seriously, do you monsters have to show off your erudition to show that you are different from us? Explain that knowledge is power
"About the word 'monster', there are detailed annotations in the book "Kongtong Questions and Answers." Zhu Xuan began to talk eloquently, "'The fake of a person is a demon, the spirit of a thing is a spirit, and the lingering soul of a person is a ghost. The heaven and the earth are obedient, and suddenly there are very strange things. If the gods are not upright, they are evil. 'They all belong to different species, and the ancients had different definitions for them. But as time went on, after the Wei, Jin, Southern and Northern Dynasties, people stopped talking about ghosts frequently. Because to the people at that time, the difference between gods and monsters It is no longer as important as people's own transportation and the change of dynasties. Therefore, the classification of monsters has gradually become blurred. From the beginning, the classification of strange things one by one, and later gradually evolved into, those who do not understand Those who are familiar or frightening are all classified as 'monsters'."
"Think about it, is this the truth?" Zhu Xuan asked us suddenly, "For example, if you saw a ghost that you had never seen before, what would be your first reaction?"
The three of us looked at each other.
"Monster...well." Su Xiaoyun said hesitantly, "Especially after going through so many things, this must be the first reaction."
"So, when you light the lamp and find me standing in front of you, how will you react?"
Su Xiaoyun was puzzled, and looked at Shi Yitong and me, "Then... of course I was relieved. Because it's you."
"At this time, do you still think in your heart, 'Ah, it's a monster'?" Zhu Xuan asked again.
Su Xiaoyun said in a daze, "Of course not."
"Why is that?" Zhu Xuan asked sharply, "Obviously you are very familiar with me, and you know that I am actually a monster. But why don't you think so when you see me?"
"Of course it's because—" Shi Yitong became anxious, and was about to interrupt when Zhu Xuan stretched out his hand to interrupt.
"That's because you are familiar with me and trust me, so you call me 'Zhuxuan' instead of the vaguely worded 'Monster', isn't it?" Zhuxuan smiled.
Shi Yitong nodded with a half-knowledge.
"You see, the same principle applies to Nian Beast." Zhu Xuan raised his head and looked around the dark and airtight space, "Because of the unknown, so fear, and because of fear, it is classified. Human beings are used to fearing the unknown. All of them are classified as monsters, but in fact, the word monster includes many different species. For example, the Wen Jiubai you know and I are not the same kind of monster."
This surprised me, "What? Aren't you and Wen Jiubai a kind of monster?"
It's the first time I've heard of it.
"No. I am a spirit, and the nine-tailed fox is a demon. And the little weasel that follows Jiuwei is a spirit." Zhu Xuan smiled, "If you classify carefully, all the monsters you met along the way are all spirits." Different. But…”
Zhu Xuan changed the subject and said suddenly, "There are also monsters like Nian that are different from any other kind of monster."
"Different from any yokai...?"
"Yeah, I've always felt that strictly speaking, Nian Beast can't be regarded as a monster at all." Zhu Xuan moved the light of the flashlight to the surroundings, and the black wind blades swirled, forming an airtight wall.
"It's not a monster, so what is it?" Su Xiaoyun walked over and asked curiously.
"Wen Jiubai once told me that the Nian Beast is a creature in the four-dimensional space." I said hesitantly, "But I have never quite understood what this sentence means."
"Wen Jiubai is right, but it may be a little difficult for you to understand." Zhu Xuan smiled, squatted down, picked up a small wooden stick from the ground, and scratched it on the ground.
He first drew two points on the ground, then connected the two points into a straight line, and asked: "First of all, our world is three-dimensional, right? If we make an assumption now, in one-dimensional space There's a creature in there, what do you think it would be like?"
Su Xiaoyun, the best learner, was the first to study seriously. She squatted down and looked at the straight line drawn by Zhuxuan and said, "One dimension is the space of points. If there is a creature in one dimension, it must be just a point. In one dimension There is no area or volume, just points."
"Correct answer." Zhu Xuan said approvingly, "One-dimensional space is isolated, if there are creatures in one-dimensional space, then they can only perceive other points that exist on this straight line, but cannot see the straight line itself .But suppose—”
Zhu Xuan picked up the branch in his hand, and added a rectangular plane to the straight line he just drew.
"But what if we made space two-dimensional?"
"Then you can see not only dots, but also straight lines." Su Xiaoyun responded quickly and said immediately.
Zhu Xuan nodded, "However, the limitations of two-dimensional creatures are still too great. Because although there is area, there is no volume, and creatures in two-dimensional space cannot see the existence of 'plane'. Then How can we make them realize the existence of the plane?"
Even if Zhu Xuan doesn't need to say this, I know it very well. I simply took the branch from him and drew a cube along the plane he drew.
"Does this still need to be said? Of course it has become a three-dimensional space. The three-dimensional space has both area and volume. Similarly, creatures living in the three-dimensional space—that is, we can all see the two-dimensional plane."
Shi Yitong also became impatient when he heard this, he stood up, "Well, Zhuxuan. I didn't say it, but these are all knowledge I knew in high school, even a scumbag like me knows how to get back matter. Why are you wasting time telling us about this? Shouldn't the top priority now be to find Wen Jiubai and Xu Yingchen quickly, and then escape?"
"Don't worry, didn't I just say that? Now we are safe for the time being. Moreover, if we want to solve the problem once and for all, we must figure out the root problem." Zhu Xuan smiled mysteriously, "And, The next question I want to ask is not so simple. That is - how can I see the whole picture of the three-dimensional world?"