Thirty-three took a deep breath, and then pulled the trigger.

"Boom!"

The deafening gunfire sounded, but there was not a trace of echo. The diameter of this Tower of Babel is several kilometers. Combined with the dim light, it perfectly creates an almost boundless sense of vastness.

The "mirror surface" even stretches the sense of distance in the vertical direction to the extreme.

Ten centimeters away from Thirty-Three's eyebrows, a 0.5-inch caliber tungsten core armor-piercing bullet produced by "Nile Military Industry" was quietly hovering in mid-air, and on the extension line of Thirty-Three's muzzle

At the junction with the ground, there was also an identical bullet.

The warhead fired by Thirty-Three did not form a ricochet, nor did it penetrate the mirror-like ground. It did not even leave any traces such as cracks, craters or scratches - it was just like a warhead.

The kinetic energy on the mirror was all absorbed the moment it came into contact with the mirror.

Ke Lan walked over, picked up the warhead and the bullet casing that fell next to it, and then "picked off" the warhead suspended in front of Thirty-Three.

"The serial numbers of the two warheads are the same. Judging from the material work, they should be the same one." After Ke Lan carefully observed it, he threw the two warheads to Thirty-three, who took a second look.

He also nodded in agreement.

"It's like a copy." Thirty-three said.

"I think this is probably the first trial. The ground on this floor is a huge mirror, and it is a mirror that can materialize the image in the mirror." Ke Lan said, "But something makes me feel a little strange.

Yes, its materialization seems to be selective..."

"Huh? What do you mean?" Thirty-three looked at Ke Lan with questioning eyes.

"Not all things thrown at the mirror will pop out the same thing." Ke Lan pinched the bullet casing with two fingers, "I only found one bullet casing on the ground - your spit and

The bullet received feedback when it touched the mirror, but the bullet case did not. Moreover, I used time to break down the entire process into hundreds of frames and looked at them one by one, and found something very interesting."

Ke Lan took a breath and continued: "When the warhead touched the mirror, it stopped instantly, just like Ze Luo used the power of space to 'pink' the second warhead fired at you, but

The shell casing flew out of the ejection window, bounced a few times when it landed on the ground, and then rolled away for a distance."

"Hiss... I find it strange when you say that. Even a spittle can 'rebound', so there is no reason why the bullet casing has no reaction?" Thirty-three squatted down and stretched out his hand to touch the ground under his feet... or rather

, mirror surface.

The mirror surface is very smooth, the friction coefficient is extremely small, and there is a strange coolness... Thirty-three tapped lightly with his knuckles, and the sound was dull. This means that there is not nothing behind the mirror surface. If the mirror surface and the ground are

If it were one piece, the thickness would be over half a meter at least.

"Could it be because of insufficient strength or speed?" Thirty-three raised his head and looked at Ke Lan, "Spit and warheads fly faster, and may be judged by this mirror as an attack from the outside and trigger it.

A series of feedback mechanisms...and the impact force of the free-falling cartridge case on the mirror has not reached the threshold that triggers this feedback mechanism?"

"Then do you think, if we jump down and land heavily on the ground, will a second version of ourselves pop out in the mirror?" Ke Lan tilted his head and asked, staring at himself in the mirror.

Ke Lan in the mirror also tilted her head and stared at him, opening and closing her lips - although no sound came from the mirror, judging from the shape of her mouth, what the "other" said was exactly the same as hers.

Under normal circumstances, this is nonsense. Of course, the actions made by the reflection in the mirror are exactly the same as the person in front of the mirror... But the question is, can the person in the mirror in front of Ke Lan really be regarded as a reflection?

?

"Don't try, I'll try if you want to." Thirty-three quickly stretched out his hand to hold Ke Lan, "It would be fine if you weren't hostile to us the second person who jumped out of the mirror, but if 'he' takes us

If you treat it as an enemy, it will be a big trouble. But if it is me, with the abilities of you and Ze Luo, you should be able to kill my 'copy' easily, right?"

"Do you think... if your clone is killed, do you think your body will be affected?" Ke Lan suddenly asked.

"Why do you think so?" Thirty-three was slightly startled.

"Since there is a 'real world' on the other side of the mirror, then to the people in that world, are we equivalent to reflections?" Ke Lan murmured to himself.

"What are you talking about? Your thinking is too out-of-the-box. I can't keep up with your thoughts? What do you mean... the things in the mirror are also real?" Thirty-three's brows became more and more furrowed.

"If both sides of the mirror are real, then who is the shadow?"

"Reflections of each other..." Ke Lan opened his palms to Thirty-Three, "Give me the two warheads just now."

"What are you going to do?" Thirty-three asked, but he still put the warhead on Ke Lan's palm, "I shot this one just now, and this one popped out of the mirror just now."

"If they are reflections of each other, then the things in the world on both sides must be highly unified... But this mirror has a mechanism that we don't know yet, which allows something to break this interface and travel to the other side of the mirror.

...But if this thing travels to the other side of the mirror, there will be multiple reflections in the original world. Look, counting the reflections in the mirror, is there a total of four warheads?"

"Yes...but what do you want to say? I'm a little confused by you." Thirty-three looked at the mirror at his feet, and then at Ke Lan, "Stop being so pretentious, just say what you have to say.

."

"This is the warhead that came from the other side of the mirror." Ke Lan pinched the warhead with his index finger and thumb, and started to exert force with both fingers at the same time - although the strength of a high-level enhanced person was not enough to bend it.

A tungsten steel alloy material

warhead, but with Ze Luo's assistance, it was different. This warhead was quickly squeezed into an oblate shape, and the other warhead lying in Ke Lan's palm, without any pressure,

It actually turned into this shape.

"Ah, this..." Thirty-three couldn't help being stunned.

"Look in the mirror, the two warheads are also deformed." Ke Lan said, "If you on the other side of the mirror cross the mirror and come to this side, and we kill you, you on this side may also die.

"

"This... this is too weird." Thirty-three smacked his lips, "I have explored quite a few ruins, but this is the first time I have seen such a weird place. By the way, shouldn't we

Is it in a dream? That old dog guy told me that when you were exploring the ruins of the bottomless sinkhole, you encountered a rare double dream... If this place is in a dream, then there are weird things.

It all makes sense.”

"I don't think so." Ke Lan shook his head and looked at the automatically deforming warhead in his palm, "Logically speaking, if it has successfully passed through the mirror, then the warhead should not be affected anymore...

…Both these two warheads have ‘new reflections’. Even if they want to maintain consistency, they should be consistent with the new reflections…”

"I suddenly thought, using this mechanism, can we copy something infinitely?" Thirty-three suddenly said, "Although I know that it is stupid to talk about the law of conservation of matter in the ruins of Alpha civilization, but this

...too..."

Thirty-three searched for a long time, but couldn't find a suitable adjective. In the end, he could only use the word "outrageous".

"Thirty-three, try stomping on the mirror hard." Ke Lan said.

"Oh..." Thirty-three nodded, lifted his right foot about twenty centimeters away from the mirror, and then stamped it hard.

A muffled sound of "boom" came from the mirror. At the same time, Thirty-three bent over and covered his knees, with a look of pain on his face.

"Damn it... there was a strong counter-shock force suddenly coming from this mirror, just like... just like..."

"It's like someone on the other side of the mirror kicked you with the same force." Ke Lan helped him fill in the second half of the sentence.

Thirty-three nodded and kept rubbing his knees and knees that were numb from the shock.

Ke Lan thought for a moment, then dropped the backpack behind him and threw it high into the sky.

The backpack carries most of his equipment and supplies. Counting the weight of the backpack itself, it weighs nearly a hundred kilograms. Coupled with the impact of free fall from this height, the force is not much worse than Thirty-Three's stomping feet.

...At least, it must be much stronger than the spit.

“Bang!!”

The backpack fell heavily to the ground, but nothing happened.

It was like falling on an ordinary surface.

The backpack itself did not receive any impact from the other side of the mirror, and the backpack falling on the other side of the mirror did not penetrate the mirror and enter Ke Lan's "this world".

"Strange..." Ke Lan held his chin and looked at the backpack, and suddenly a light flashed in his mind, "Wait a minute, I think I know what's going on!"

"What's going on?" Thirty-three, who was holding his knees, raised his head and looked at Ke Lan.

"What were you thinking about when you stamped your feet on the ground?" Ke Lan asked Thirty-Three.

"What are you thinking about?" Thirty-three recalled, "I was thinking... what would happen if there was a foot stomping over from the other side of the mirror."

"What else?" Ke Lan continued to ask.

"And...oh, I also thought, it would be great if I could crush this weird mirror with one kick."

"What about when you spat before?"

"Well...at that time, I seemed to feel uncomfortable because the floor, which was like a mirror, was too clean. In addition, the clear reflection inside made me feel a little scared. I wanted to change the mirror.

If it's a bit dirty, will it make me feel less uncomfortable..." Thirty-three's speech became slower and slower, and it was obvious that he had realized something.

"That should be correct. Whether it's stamping your feet or spitting, when you do these actions, there is 'malice' or 'aggression' in your heart. As for shooting, let alone shooting... But

The bullet casing dropped, and I threw the backpack and let it fall freely. Neither of these actions were 'malicious' or 'aggressive', and the mirror did not give corresponding feedback."

"So, this mirror is a bit like some kind of defense facility created by the Alpha civilization." Thirty-three pondered, "All things and powers that are detected as 'malicious' or 'aggressive' will be treated in the same way.

Respond in a certain way, and ignore those without 'malice'... So what is this criterion? Is it our thinking?"

"I don't know." Ke Lan shook his head.

"By the way, since you said this is the first of the eight trial procedures, have you figured out what to do to pass this trial?" Thirty-three looked up and looked at the "hanging" in the air.

"Moon", then looked down at the mirror at his feet, "Does the content of the trial require us to pass through this mirror? Or... break it?"

"Let's explore the surroundings first." Ke Lan also raised his head and glanced at the "moon", but for some reason, he always had a feeling that this moon seemed slightly blurry compared to the one in the mirror?

The three of them chose a direction and walked straight forward. After walking about two kilometers, they finally arrived at the border.
To be continued...