They hugged each other for dozens of seconds, Kan realized his gaffe, his hands left the picture, and he looked at Ruan Lin with an apologetic face.

"I'm sorry, I'm having trouble calming my emotions at the moment."

Kan's whole body turned dark blue, and he took a deep breath.

Ruan Lin took the initiative to ask: "Take it easy, what was your original decision?" Build this underground facility? ”

"Yes! You guessed it, I was opposed by the surrounding community, who complained about me for causing panic among the residents. ”

Kan exhaled hard, and the dark blue of his skin began to dissipate.

"In the beginning, our entire civilization believed that our entire race was unique, the only group of life in the universe, both in our uncivilized period and in the period when we began to observe the universe."

"Our entire civilized race is extremely conceited, and everyone is immersed in this atmosphere! We always thought that we could dominate everything in the universe until 3,000 years ago, when a strange civilization visited. ”

Ruan Lin suddenly asked, "Excuse me a little, is your calendar customized according to the orbital cycle of the home planet?" ”

"Yes," replied, "not the planet we are on, but our home planet, the Far Sunset. ”

It seems that the civilization calendar based on the orbital cycle of the home planet may be the norm in the universe, which is a more accurate reference, whether it is the Karn civilization or the Adok civilization.

The orbital period of Gliese 581g is 36.6 days, which is about one-tenth of the Earth's orbital period, that is, their 3000 years are equivalent to 300 Earth years.

Ruan Lin smiled: "Please go on, Kan, I'm also interested in your story." ”

Kan hurriedly led Ruan Lin to the sofa in the center of the living room: "We all forgot to entertain you!" Figure, go make a cup of Penny! Prepare some food by the way. ”

Ruan Lin can only understand the meaning based on the transliteration, and Penny may be the equivalent of coffee on earth.

Tu walked into a room and brought out a transparent tray in less than a minute.

"Savor our civilized Penny and light meal!"

Tu gently placed the dinner tray on the table in front of Ruan Lin.

Bonnie is the "Death Drink" in the anime, the liquid in this transparent cup seems to be alive, even if the cup is stable on the table, the liquid in the cup is still rolling and lilac in color.

The food on the transparent plate on the side is a certain meat product, which is also unsightly, and the sauce on the surface is also light purple.

Ruan Lin secretly rejoiced in his heart: It's good that he doesn't have a sense of taste or smell, but he must give them enough respect.

It is possible that the feasts of the Earth Age are also extremely unsightly in the eyes of some civilizations, and the eating habits of different races are very different from those of civilizations, not to mention other civilizations.

Ruan Lin quickly finished eating Penny and the meat products, and Kan and Tu were already sitting on the sofa on Ruan Lin's right at this moment.

Kan's expression was extremely excited: "After we mastered the technology of sending information, we began to send countless friendly messages to the universe, but we never received any reply. 3,000 years ago, the strange civilization that visited our star field was called the Triangle Civilization, they had countless spaceships, and on that day, our civilization faith was broken, and we could hardly accept this fact! ”

Ruan Lin was a little surprised by this: "In terms of your level of civilization, the scope of the observable universe is still very large, even if you can't step out of this star field, how can you insist that there are no other intelligent life in the universe?" ”

Kan continued: "There is only one civilization in the universe, and this is an extremely desperate proposition, and our entire civilization has spent 70,000 years to prove it, only to be broken in one day! ”

"Perhaps it may seem to you that our entire civilization is acting extremely stupidly, but all members of our civilization have a sense of skepticism about the endless starry sky. This sense of skepticism has been present since we were born, whether it is the leaders at the top or the scavengers at the bottom! It is this sense of skepticism that has propelled our entire civilization down this path, and there is no turning back. ”

Ruan Lin's heart also trembled: 70,000 yuan light is equivalent to 7,000 years ago, when the earth and the moon still existed, so why didn't they receive information from the earth?

Back in October 2008, the RT-70 radio telescope of Ukraine's national space agency sent a powerful message to Gliese 581d, which arrived in the Gliese 581 star system in 2029.

In other words, before he was born, the Yuanguang civilization should have received a congratulatory message from the earth!

But the current situation is that there is a hardware problem with the Earth's radio telescope?

Ruan Lin took the initiative to ask, "Before the arrival of the wanderer civilization, did your civilization receive the signals sent by intelligent beings?" ”

Kan straightened his sitting posture and said slowly: "No, our civilization only receives the irregular signals of the cosmic background, and I can say with great confidence that our civilization will not have observation errors. ”

Ruan Lin was very skeptical about this: "The home planet of our civilization is 20.3 light-years away from you, if the dictionary is not wrong, the word "light-year" should be consistent with the meaning of the words of this civilization." We've sent you a signal tens of thousands of miles ago! It's just a pity that we didn't wait for a response. ”

"It can't be! I am skeptical about the means by which your civilization sent information at that time, you can check the records at that time, and it is possible that your civilization's information equipment for transmitting information may have been damaged! ”

Kan turned his head and looked at the figure for a few seconds, then his face was full of confusion.

Ruan Lin also checked the record in the database, and the results showed that the human signal arrived as expected, but never received a reply.

If it were an ordinary human being, Ruan Lin would definitely wonder if there was a concealment of this result, which may be a conspiracy theory.

But he has the knowledge and memory of all mankind, and those conspiracy theories are self-defeating, and the result is indeed unmistakable.

Kan directly crossed the topic and continued: "After the triangular civilization arrived in our star field, they had a friendly exchange with us, and we also learned about other civilizations in the universe at this moment. But I knew that not all civilizations in the universe were friendly to us, and then I began to dig this underground shelter, and I knew that those malicious civilizations would come! ”

WIT suddenly took the initiative to contact Ruan Lin: "Dr. Ruan, the radio telescope has received a set of messages. ”

Ruan Lin also returned to the computer carrier at this moment, and the content of this set of messages made Ruan Lin feel trembling from his soul.

There are a total of 501 messages in this group.

The first paragraph is in English: hello, world!

The second paragraph is in Chinese: Hello, world!

These greetings lasted for 365 paragraphs.

Paragraph 366 is a photo:

Earth.