At this moment, the heads of Yuan Chen, Smith and Lynn were all spinning rapidly. Pen fun and pavilion www.biquge.info

They both knew very well that the other party was definitely not lying. Moreover, it is very low-level to joke in such a situation.

"What the hell is going on?" Yuan Haochen asked rhetorically, "You really waited for us here for ten days?!" ”

Lynn looked stunned, he was clearly aware of the seriousness of the incident.

"After you entered, I continued to observe outside the labyrinth as you commanded. Soon, I lost contact with you......"

"That's right, when I passed through the first intersection, I found that the communication system could no longer find any signal."

Yuan Haochen nodded and recalled.

"I was nervous and immediately went to the diamond-shaped control platform at the entrance of the maze, hoping to find a rescue solution. However, the display screen of the diamond-shaped console still only reads the words "Test in progress". ”

"I didn't dare to enter the maze rashly, so I had to wait for ......," Lynn continued.

"You're doing the right thing!" Yuan Haochen affirmed.

"When I waited for nearly ten hours, the spacesuit was not full of oxygen and electricity, so I had to return to the Quanyue space rover and carry some supplies. I think you'll need to change supplies as soon as you come out. ”

Lynn pointed to a pile of supplies placed not far away and continued, "I was very panicked at the time, because I knew that in a few hours, if you still can't get out, then...... Cough ~ cough ~ cough! ”

Lynn said that he was excited, and suddenly began to cough violently.

"Lynn, you take a break."

Yuan Chen and Smith said with concern.

"I, I'm fine, it's just an old problem." Lynn waved her hand.

"Why haven't you run out of supplies yet? Even if you're just away for a day, it's not enough! Lynn asked, confused.

"It's amazing inside the labyrinth, the air and temperature are suitable for survival, otherwise, we would indeed die this time!"

Smith quickly explained.

"I didn't expect that! No wonder it is, ahem......"

"Don't rush, speak slowly."

Yuan Haochen patted Lynn on the back.

"Later, I kept waiting, and the more I waited, the more desperate I became, and I really didn't know what to do......"

Lynn said this, and burst into tears again.

You know, a person is in the distant underground ruins of aliens, and his teammates have disappeared one after another, and there is almost no chance of survival. Thinking that he is the only living earthlings in the Alpha Centauri galaxy from now on.

What kind of despair and helplessness must have been!!

"I returned to the Future three times later because of lack of supplies, in fact, you haven't come out for so many days, and I'm desperate. However, the display of the diamond-shaped console still shows "The test is in progress". So, I still have one last glimmer of hope. ”

"I think I'll have to wait at least until the sporadic control platform shows the final result......"

Lynn recalls with sadness the experience of being tormented by loneliness and pain.

"Unexpectedly, you guys came out and you are safe and sound! Ahem~"

"How many days have you not eaten?" Yuan Haochen asked, looking at Lynn's extremely haggard face.

"The last time I went back to the future was three days ago......"

"Good work!"

Yuan Haochen patted Lynn's shoulder, and his mood was extremely heavy.

"But why, we were only away for one day, and Lynn waited alone for ten days!?"

Smith thought about it and didn't have an answer.

"yes, why? What happened to you in the labyrinth? Lynn asked with a faint breath.

"I think it's all about this four-dimensional labyrinth."

Yuan Haochen frowned and said word by word.

"Four-dimensional space labyrinth!?"

Lynn and Smith haven't figured it out yet.

"The reason why this labyrinth is so difficult to decipher is because it is an object in a four-dimensional space...... Yuan Haochen carefully introduced the details to the two.

"It's incredible, no wonder I can't get out of it with a broken leg. But it's hard for me to understand it right now. Smith was still confused.

"Although I have heard of four-dimensional space, I can't imagine it without experiencing it firsthand." Lynn also shook her head and said.

"You mean, in the fourth dimension, time slows down?" Smith asked rhetorically.

"Nope! The slowdown of time has nothing to do with four-dimensional space. Yuan Haochen waved his hand and continued,

"What's the reason for that?" Smith asked.

"Judging from the message left by the Creator, they are a cosmic civilization with black hole technology as the core." Yuan Haochen continued unhurriedly, "So, I guess there is a black hole inside the labyrinth. ”

"Black Hole!!" Both Smith and Lynn were taken aback.

"However, this black hole should not be particularly large, otherwise the four-dimensional space would not be able to restrain it. As the Creator said, they don't have the means to create a huge black hole energy source yet. Yuan Haochen continued to explain.

"Why do you have such a judgment?" Lynn asked.

"For two reasons." Yuan Haochen said.

"The first point is that 2.1 billion years have passed, and the devices and computers we have found in other sites have basically failed to boot because of the lack of energy drive. However, the entire labyrinth system can operate normally, indicating that there must be a powerful energy source inside the labyrinth. ”

Both Smith and Lynn agreed.

"Second, I speculate that the reason why time slows down in the labyrinth of four-dimensional space compared to the outside world should be related to the black hole." Yuan Haochen said quite firmly.

"General relativity?" Lynn asked rhetorically.

"Yes, in the general relativity model of space-time, mass causes space-time to bend. The curvature of space-time near a black hole is very high, which means that space-time near it is compressed. If we use light to illustrate, it means that when light passes near the black hole, it will travel a long distance, but the speed of light will not change, so it means that the time it has passed has increased (relatively slowed). But for people near the black hole, like me and Smith, they don't feel that time slows down. The slowdown of time is only relative to another reference point, such as Lynn, who has been outside of the four-dimensional space. ”

[https://en./wiki/schwarzschild_metric, there is a very complex calculation formula here, it will tell you why time seems to slow down, I won't list it, if you don't have a very deep knowledge of calculus and geometry, just understand it. 】

Let's use an analogy.

If we think of space as a liquid, we think of what happens in it as the movement of objects. Time is like the speed at which an object moves in a liquid, if the concentration of the liquid is low, it moves faster, and if the concentration of the liquid is higher, it moves more slowly. The concentration in the vicinity of the black hole is very high.

Time is like the playback speed of a movie, which can be played fast or slowly, but this change is not perceptible to the people in the movie, because the reference points of the people in the movie to time are all in the movie.

(To be continued.) )