The man saw that Wang Ke knew more, looked at Wang Ke and asked: "I have a way to determine the time, I don't know if you understand it, do you know how old the earth you live in?" ”

"Yes!"

Wang Ke is now energetic: "The age of our earth, that is, the time we live, is about 4.5 billion to 4.6 billion years since the birth of the earth!" ”

"Oh?" Now it was the turn of the three of them to exclaim.

Wang Ke didn't know why they were surprised: "The time you are in, if you calculate according to our time, is it roughly not a few thousand years behind us, right?" ”

"No, much, much worse!"

After being shocked, the man shook his head and asked, "Do you know where your earth is in the universe?" ”

"The Universe – The Virgo Supercluster – The Cluster – The Milky Way – Orion Spiral Arm – The Third Ring of the Solar System."

As a top student in the Department of Physics, Wang Ke came as soon as he opened his mouth.

"He's about right!" The black-eyed beauty suddenly spoke, and her voice was crisp and pleasant, very good.

"Well, it's roughly a blazing galaxy, but the difference in time is incredible!"

The man muttered, stared at Wang Ke again, and asked, "How did you determine the age of the earth?" ”

"We got it with a carbon 14 assay!"

Wang Ke also understands, let's put it simply: "Carbon 14 is a radioactive isotope, its half-life is 5,730 years, this way is very stable, after countless times of practice proven, we also call carbon dating." ”

"Oh!"

The faces of the three of them changed slightly, and the man said: "Your measurement method, I can understand, is accurate under normal circumstances, but this is incredible, the time we are in is about 2.5 billion years after the birth of the earth." ”

"Huh?"

Wang Ke almost dropped his jaw in shock: "You guys are ······ Before us, humans two billion years ago? ”

"I'll go!"

Lei Jian pouted and interjected: "You guys are out of the way, according to what you say, you have already finished the calf, and the bones and scum are rotten!" ”

The man glanced at Lei Jian, still looked at Wang Ke and said, "Let's go to a separate room and talk, okay?" ”

There were too many mysteries in Wang Ke's heart, he almost wanted to burst his chest, and he also thought that Lei Jian was in the way, so he nodded hurriedly.

Seeing Wang Ke follow the three of them out, Li Zhe seemed to remember something, and strode after him: "You don't want to let him alone, right?" Let us out······"

As the door closed quickly, Li Zhe's voice was also cut off inside.

There are silver-white floor tiles under your feet, and at the end of the corridor, there is a large dark green window, which seems to be sunny outside, and on both sides of the corridor, there are the same walls, and you can't see the door, but in some places, there are bright spots flickering.

The three of them took Wang Ke to a place with flashing bright spots, the wall naturally cracked, and a door appeared in front of them, and the furnishings inside were similar to the room where Wang Kelai came, with an extra workbench-like place and a few chairs.

"You can call me Shihong."

The man motioned for Wang Ke to sit down and pointed to the black-haired beauty: "They are Hai Ling and Shanna." ”

"Hello, my name is Wang Ke!"

Wang Ke introduced himself and asked impatiently: "The time you live must be very accurate, so ······?"

Wang Ke did not doubt the accuracy of their measurements, and felt that their technology was much more advanced than his own era.

So, two billion years ago, what was the concept?

They would have been destroyed long ago, otherwise, where would the earth and humanity come from now?

It's just that I'm embarrassed to ask this.

"I know what you're trying to ask, and your guess might be right."

Shi Hong frowned slightly: "Our civilization should be destroyed, the specific time is uncertain, but we are not the first batch of civilizations to be destroyed, before us, there is also the destruction of civilization, this is the law!" ”

"The law of entropy increase?" Wang Ke exclaimed.

"What did you say?"

Shi Hong didn't understand, stared at Wang Ke and asked, "What is the law of entropy increase?" ”

"The law of entropy increase means that everything cannot spontaneously develop in a good direction, but will develop in a chaotic and disorderly direction, which is irreversible and eventually leads to destruction."

Now it is two worlds at different times, different technologies, and different worlds, and Wang Ke can only simply tell him according to his own understanding.

The three of them seemed to be taken aback by Wang Ke's words, showed a look of surprise, and glanced at each other.

After a while, Shi Hongcai said: "What you said is very reasonable, this world is approaching destruction every day, which can be said to be irreversible, but this is also the driving force for us to move forward, and strive to find the final solution." ”

"Every day is closing in on destruction?"

Wang Ke asked puzzledly, "What do you mean by this?" Isn't it the law of entropy increase? ”

"No, it's a mystery about the cycle of the universe."

Shi Hong shook his head slightly: "We need to communicate fundamentally, can you introduce us to the Blue Star in two billion years······ That is, what is the human civilization you live in, if you have any questions, you can ask us. ”

"Then let me ask first!"

Wang Ke had too many doubts in his heart: "Since you are a civilization two billion years ago, why do you speak Chinese?" Could it be that two billion years ago, it was our country that ruled the earth, or the blue star? ”

"No, our Blue Star is also diverse, and we speak your language because of Li Yu."

Shi Hong paused and said: "There are six humans who came to Blue Star through the strange point, four of them were not discovered in time, and the hyperoxia reaction caused respiratory failure and death, Li Yu was discovered by us in time, and communicated with him as much as possible, but he didn't know much." ”

The beautiful Hailing took it and said: "The other person is not in the same area as you, the language and writing are different, it is the alphabet, we can also understand it, his writing is incorrect, Li Yu's is correct." ”

Wang Ke basically understands that the person who came here by chance through the critical point, or the person at this point in time, is also a foreigner.

Li Yu is a child, a third-grade elementary school student, who doesn't know much, doesn't have a wide range of knowledge, and they communicate as much as possible, and they can't get any too valuable information, but they have mastered language and writing.

But they said that Li Yu's words were correct, but Wang Ke didn't quite understand: "Why do you say that Li Yu's words are correct?" ”

"We have also been in contact with some extraterrestrial civilizations and have had exchanges."

Shi Hong thought for a while and said: "Thinking and matter constitute the universe, and the communication between different civilizations must first have a reference, and the language and writing you use are not much different from ours, and they have the function of initial description, what I said, can you understand it?" ”

Wang Ke nodded and said, "I can understand!" ”

Shi Hong and the two beauties glanced at each other, as if they showed a look of surprise.