(Foreword)

It may seem like a hopeless approach, but it is the key to success.

(Text)

September 22, 2021 at 13:12 p.m.

"I know how we're going to get out." I said happily.

"Really? Do you know how to get out? Cui Li's eyes told me he didn't seem to believe it.

"Of course! We can definitely get out of here!" I replied with a smile on my face that I hadn't seen in a long time.

"What the hell have you come up with? Tell me quickly! Cui Li asked anxiously.

"It's actually quite simple! We can use the law of reflection to get out of this labyrinth. ”

"The law of reflection?" Lin Yun looked at me with a puzzled expression.

[1] The law of reflection states that when light hits an interface, the incident ray and the reflected ray are at the same angle. Reflection and refraction occur at the interface where light is incident on different media, and the following occurs when reflected. I looked at the puzzled expressions on everyone's faces and continued: "The reflection line is in the same plane as the entrance ray and the normal, and the reflection line and the entrance ray are separated from the two sides of the normal, and the angle between them and the interface normal (called the incident angle and the reflection angle respectively) is equal. 【1】”

"Wait, we all know all these basic theories of physics that you said, I mean to say what does this have to do with how we get out of this labyrinth?" Cui Li's question gets straight to the point.

"Well, aside from the big truths of physics, we just need this." I took my flashlight out of my bag and shook it in front of everyone.

"Flashlight? Is that what the reflection of light refers to? Cui Li pointed to the flashlight in my hand.

"You're right, you see that there is a full-length mirror here at every corner, and the two walls of the corner form an isosceles right triangle. This provides a good basis for my approach. We can do a little test first, and it will be easier for you to understand. "I walked around the nearest corner, turned on the flashlight in my hand and looked at the mirror, and the light was reflected in the mirror in the other corner.

"But I still don't understand what's the use of that? The light waves will gradually diminish as the distance reflected increases, in other words, the light from your flashlight will not travel very far. I thought you had some great idea, and now it seems like that's all there is. Lin Yun said in a mocking tone.

"It's possible that you said it, but you ignored a few points, first, I had noticed that the flashlight we were holding in the lounge area was not the same as usual, this flashlight had a very strong beam, and when I used it in the long corridor on the first floor, I found that the light was quite far away. Second, the strength of the light is also an important factor, that is, the environment, in a sunny place and in a dim place at the same time, the effect is also very different, and third, and most importantly, distance will also affect the effect of reflection, for example, [2] if you stand next to the lake, you will find that the lake is transparent, and if you stand far away and look at the lake, you will find that the lake reflects the scenery on the shore. Employment is what we often call the 'reflex phenomenon' [2]. "I suddenly felt like I was standing in a physics class at some university, explaining some physics basics. But I soon realized that I was still in a labyrinth.

"Cui Li, you can help me dim the ceiling light." Again, I looked at the mirror around the corner with my flashlight. "If my conjecture is correct, this labyrinth has the most wrong route of all

will come back here after that, so the light from the flashlight should come back here too. ”

But the light didn't come back to square one, I tried a few different corners, and the results were the same, we didn't see any light coming back to us.

"I have to say that you have thought about it in great detail, but you have forgotten the simplest thing, when the light of your flashlight faces the T-junction, your light will not choose the left or the right side by itself, all the light will only be covered by the wall. It's not going back to square one as you might think. Lin Yun looked at my disappointed expression and said unhurriedly.

Li Ruina didn't speak, and it seemed that she had already noticed that there was something very wrong with my conjecture.

"That means we still don't have anything we can do." Cui Li's final summary is simple but very incisive. We don't have any way out of here now, the only thing we can do is watch the minutes tick by.

September 22, 2021 at 13:39 p.m.

Just when we were all in a state of loss, the walkie-talkie rang: "Who... Listen... Arrive... Is it? We... Need... Help... Help...!" Xia Cheng's voice came intermittently from the walkie-talkie.

"Where are you? Are you out of the labyrinth? I yelled into the walkie-talkie.

"I... We... Already... Left... Maze. Xia Cheng's voice was still choppy.

"How can we get out of here, we need a way to get out of here." My voice grew louder and louder.

"Away... Open... Labyrinth's... The way to do it is... Open... Close... Before Xia Cheng finished speaking, the signal on the walkie-talkie was cut off.

If what Xia Cheng said is correct, the key to leaving here should be the switch on the wall. I walked over and studied the switches on the wall, but found nothing. I'm going to rotate the buttons, turn them left and right, and the only thing that changes is the brightness of the lights in the maze, and nothing else is different.

"Isn't what Xia Cheng said about the switch we see now, there are other switches in the labyrinth?" Cui Li speculated.

I looked at the rotary button in front of me, and suddenly realized something, I pressed the rotary button hard, and sure enough, this switch was not just a simple top light switch.

Suddenly, a square instrument was lowered from the roof where we were. That's when I suddenly remembered the restaurant in the AEF Building. Sure enough, it has the unique style of AEF company,

"You see, it's not just here, there's also a circular instrument descending from the T-junction here." Cui Li pointed to the nearest T-junction and said.

"Li Ruina, do you know what this is?" I looked at Li Ruina, who had not spoken.

She looked at the two machines and said, "Your approach seems to be right. These two are the latest research developed by AEF, the light breaking sensor and the light breaking splitter! ”

I saw a confident look on Li Ruina's face again.

[1] ——Excerpt from Baidu Encyclopedia "The Law of Reflection"

[2] ——Excerpt from Baidu Encyclopedia "The Law of Reflection"