[When Halo decelerates, dx3906 is just an ordinary star from the spacecraft, but when the curvature engine stops, the star can already see the shape of a disk. Compared with the sun, the light it emits is reddish.
.]
["The star dx3906 has two planets, both of which are solid planets."]
[“The one farther away from the star is about the same size as Mars, but has no atmosphere, and its surface is very desolate and gray. The other planet with a smaller orbital radius is about the same size as the Earth, and its surface features are also very similar to the Earth’s. It contains
There is an oxygen atmosphere, and there are obvious signs of life, but no traces of agricultural and industrial civilization have been found, and it is blue."]
[After listening to the report from the Halo, the two even named the two stars according to their colors. One was called Gray Star and the other was called Blue Star.]
[It took Halo only fifty-two hours to fly across the 286 light-years between the solar system and dx3906, but it only took sixty astronomical units to travel from the edge of this galaxy to the Earth-like planet at sub-light speed.
The journey took eight full days.]
[Halo entered the orbit of Blue Star and began to gradually descend. At this time, the spacecraft AI suddenly made an important discovery. 】
["A smart electromagnetic signal was received from the surface of the planet. It is a landing navigation signal, a format from the early era of deterrence. Do you accept this landing guidance?"]
[Cheng Xin and aa looked at each other excitedly, "Accept! Follow its guidance and land."]
[Twenty minutes later, the Halo landed on land near the equator. 】
[Neither Cheng Xin nor Ai aa carefully observed the environment of Blue Star. Their attention was attracted by an aircraft parked near the Halo. 】
[There is a person standing next to the aircraft, a man, wearing a white jacket and dark trousers. The airflow when the Halo landed ruffled his hair.]
"That's—!"
"Guan Yifan!"
【"Is it him?"】
[Cheng Xin shook her head slightly, and with a quick look from a distance, she knew that person was not Yun Tianming.]
["Are you from the solar system?"]
【"Yes."】
[Ai AA, who was following Cheng Xin, added: "The solar system is gone."]
["I know." The man nodded: "Is anyone else running out?"]
【"Maybe not anymore."】
["Oh." The man nodded and acted very calmly: "My name is Guan Yifan. I'm really waiting for you here."]
["You knew we were coming?"]
["I received your gravitational wave information."]
["Then are you from the Blue Space?"]
["Blue Space and Gravity were already four centuries ago, but I am really an ancient person from four centuries ago. My name is Guan Yifan, a researcher onboard the Gravity. I have been hibernating for these four centuries.
I only woke up five years ago.”]
["Where is the blue space and gravity?"]
【"In the museum."】
【"Where's the museum?"】
["World No. 1 and World No. 4."]
【"How many worlds are there in total?"】
["Four, and two more are pioneering."]
["Then where are they?"]
["Two of you, no matter who you meet in the future, whether human beings or any other intelligent things, don't ask where their world is. This is the basic etiquette of this universe, just like don't ask a lady's age... But I still want to
Ask, how old are you all?”]
[Ai AA sat down on the grass: "Just be as old as you think you are. She is seven hundred years old and I am five hundred years old. That's it."]
["Dr. Cheng Xin has changed little from four centuries ago."]
【"Do you know her?"】
["I have seen it in images received from Earth, and that was four centuries ago."]
[During the conversation between the three of them, some things began to gradually come to light.]
[First of all, the starship humans not only survived, but survived very well. They even found a new home.]
[Secondly, it is not safe here. This area is close to the center of the Orion Arm and there are two busy shipping routes. 】
[At night, Guan Yifan took the two of them on the grass to find the location of the solar system. 】
[Guan Yifan pointed to a direction with sparse stars in the night sky and said: "The solar system is in that direction. Of course, nothing can be seen now."]
["Even if you go back, you won't be able to see anything. The two-dimensional sun and planets you see are actually an energy release effect of three-dimensional matter after two-dimensionalization. When the energy is released, everything will be invisible.
The two-dimensional solar system has lost contact with the three-dimensional world forever."]
[“You can see three dimensions from the four-dimensional space, I have seen it with my own eyes, but you can’t see two dimensions from three dimensions, because three dimensions have thickness and two dimensions have no thickness. The light in the three-dimensional world can completely pass through, so the two-dimensional world is completely
Transparent, impossible to see."]
[“It can’t be seen, and it’s theoretically impossible to see it.”]
[Immediately afterwards, Guan Yifan asked Cheng Xin and Ai aa about their purpose of coming here, and told them about the Trisolaran people. ]
["The Trisolaran First Fleet (where Yun Tianming is located, not at the speed of light) and the Trisolaran Second Fleet (the light speed fleet) may have never met. More than sixty years ago, a large-scale battle broke out near Taurus. It was very tragic.
, the wreckage formed a new dust cloud. We can be sure that one of the parties is the Trisolaran Second Fleet, but we don’t know who the other party is, and the outcome of the battle is also unclear.”]
[The three of them lived in Blue Star for a while. Guan Yifan originally planned to take them to World No. 1, but they received a message from Gray Star. 】
[Thirty-five minutes ago, a spacecraft of unknown origin landed on the surface of Gray Star. This was a formation of five aircraft. Just twelve minutes later, these aircraft took off from the surface of Gray Star at the same time and quickly disappeared.
, they have not even been observed entering planetary orbit.]
[Guan Yifan’s original mission was to find and study the traces left by alien civilization in this galaxy. After receiving the information, he did not hesitate to take the Hunter to the Gray Star to explore. 】
[Cheng Xin also went with Guan Yifan. Guan Yifan, who originally did not intend to take Cheng Xin with him, took Cheng Xin with him after Ai AA's persuasion. 】
["Where can there be news about Yun Tianming."]
[Guan Yifan also repeatedly told Ai AA who stayed in Blue Star not to communicate with the Hunter unless there is an emergency, because no one knows what other foreign things are in this galaxy, and communications will reveal their whereabouts. 】
[On the way, Guan Yifan also told Cheng Xin about World No. 3 that he had never mentioned. 】
["I have never been to World No. 3, because people who have been there cannot come back from there. That world is in the Tomb of Light."]