The imaginary world is a piece of paper, and everything is a two-dimensional image on this plane.

What does a person see when he looks at other objects?

Lines.

No matter how big or shaped the object to be observed, all that can be seen is the line, and the difference is only in the length. And if there is a larger object in front of you, the object to be observed is completely hidden behind a longer line.

So what do you do if you want to see it?

People in the two-dimensional world may have some of their own methods, some of which should be similar to the ones we are familiar with, such as moving one's position, bypassing obstacles, and looking from another angle. However, if the subject is hidden in an enclosed circle, it will not be seen in any way.

This is not a problem for us in the three-dimensional world, and when we look down at the paper from above, we can easily see that things are in circles. All the secrets of the low-dimensional world are open and transparent to the high-dimensional world.

Imagine if this ability to observe in the high-dimensional world could be acquired by the low-dimensional world, how would the situation change?

If there was a mirror, a being that transcended two dimensions, and through the reflection of the virtual image, the object hidden in the circle was revealed to the observer, would there be anything that could not be seen?

"You mean prisms?" The white dragon nodded thoughtfully, "A very vivid metaphor." But we already know how it works, so what's next? ”

Goku said: "In this hypothetical environment, if you want to hide yourself, what will you do? ”

"The closed circle only works on the same kind of people in the two-dimensional world, and its occlusion has failed. Then there are only two ways, hide the body, or destroy the optical path propagation. ”

"That's right. Particle interference, which is probably a hidden ontology, has the effect of turning oneself into the same color as paper, interfering with the picture seen from the third dimension. Although the existence of the same kind in the two-dimensional world can still be seen, when viewed from a higher dimension, the difference between the object and the paper cannot be seen. Did I guess right? ”

"Basically correct. But this method also failed, so the only way to start with the optical path propagation. Bai Long thought for a moment and asked, "But where are we going to get a high-dimensional obstacle?" ”

"Don't think of yourself as a three-dimensional creature, throw away your common sense for a while, and extrapolate with the thinking of a two-dimensional creature." Xuanzang threw the stone in his hand on the ground, lowered his head and said, "For two-dimensional creatures, even if they have a mirror on their heads, they can't raise their heads to look at the image in the mirror, because their world has no height. ”

As he spoke, he drew a simple diagram on the ground, and then used his palm as a prism to stand on top of a stone. Then he slowly lowered it and drew a dot in front of the stone with his finger.

"They need to image again, to convert the three-dimensional image in the mirror into a two-dimensional projection that they can understand...... Ah, speaking of which, I kind of understand what Goku means. ”

"How do you get it, you say." Bai Long asked.

Goku stabs the phase pillar into the circle, creating a deep pit in the ground. "That way, what they see can't be restored." He said.

"What the hell? I know what you mean, but it's too violent! We're the stone in the circle, I got it right, right? The white dragon turned to the canopy for advice, "Look, it's all broken." ”

Tianpeng looked embarrassed: "I think it's just because this model is not suitable for demonstration, Miss Bailong." The meaning of this demonstration should be to distort the plane and affect the observation of the three-dimensional angle, right? If done correctly, it will not affect the 2D objects in that area. You can automatically replace this piece of ground in your brain with a piece of rubber that is very malleable. But Brother Wukong, we don't have any equipment now, so we can't do this. ”

"Who says no?" Wukong flipped the phase pillar in his hand.

White Dragon and Tianpeng had expressions of sudden realization on their faces.

"No wonder Yang Jian always has to enter the imaginary space himself to see your location. The experimental observation records of the Five Fingers Prison were also obtained by him when he personally entered the scene. Bai Long recalled.

Xuanzang raised a question: "Extended to our three-dimensional world, this is equivalent to the distortion of the gravitational field." It really doesn't hurt us, but does it cause an uneven flow of time? You know, observations of the universe have confirmed such phenomena. ”

"I don't really understand this theory, but in my experience in imaginary space, I don't have to worry about this kind of problem. You've all been close to the area of action of the phase column, and nothing has happened. ”

"I have another question in mind. In this way, although the prism was countered, they could clearly see the anomaly of the image generated in this area, wouldn't it be impossible to achieve the purpose of concealment? ”

"It doesn't matter. What we need to hide now is not location, but our behavior. Besides, in this situation, they don't dare to send reconnaissance planes over when they find out where we are, unless they don't want to play anymore. Xuanzang explained.

Bai Long clapped his hands: "Then happily decided." It's just that I'm curious about one more thing, Wukong, how did you move such a heavy phase column? ”

"You can take it too." Goku said and threw it over.

"No, no, no, no, ah, ah, ah! Yes? Huh? Bai Long finally calmed down, and looked at the phase pillar that was almost thrown out by himself in disbelief, "It doesn't seem to be heavy." ”

She looked up and found that except for Goku and her, everyone else had run dozens of meters away. The canopy directly turned into a pig demon and looked at her with a frightened expression. Even Joruri showed a worried expression.

"Don't panic, I won't hurt everyone." Wukong took back the phase pillar and smiled mischievously, "Although the mass has not changed, a part of the energy can be used to counteract gravity. If the energy supply is stopped, the weight will change back. It's fun then, such a small volume, as soon as you put it on the ground, you will sink into it. ”

The white dragon calculated for a moment and said in surprise: "Then if it is a little smaller, won't it fall directly into the center of the earth?" Damn, this thing can really destroy stars no matter how you use it! ”

Xuanzang, who walked back, heard their conversation and couldn't help asking, "Wukong, how long can the energy you absorbed in the Five Fingers Prison last?" ”

"For a month, half of the energy will be left to form neutron star matter when needed."

"It's a big risk, and I have to find a way to recharge you."

Bai Long interjected: "Where to find nuclear fuel bananas?" ”

"It's not good to joke about monkeys in front of others." Tian Peng persuaded.

"The pig's head that eats the most has no position to refute!"

Tianpeng shook his head helplessly and proposed, "I remember that Big Brother Wukong has the ability to transform his body, why don't I give theoretical guidance and help you build a fusion reactor in your body?" ”

"Is that okay?"

"Try it, I think it should work with your abilities."

Bai Long glanced at Tianpeng and said, "Don't believe this guy, he always makes some empty promises, and the little girl's ball has not been repaired." Don't talk nonsense yet, I'll take you to meet the neurotics of that steel plant. ”

After speaking, he beckoned the group to hurry on the road.

"Wait, speaking of ball ......" Xuanzang, who was walking on the road, suddenly stared at the Heavenly Hell Mecha next to him, approaching step by step, "FTB, before you saved me, you actually took the time to pick up the self-propelled machine gun carried in the Black Impermanence Body, which is really an admirable priority dispatch." Looks like it's time for me to do some surgery on your brain. ”

"Don't care about the details, master! Time waits for no one, so let's get started. ”