On this planet two light-years away from the Earth, the shadows of earthlings can be seen everywhere, but the cities are not so dense. The aircraft shuttles back and forth in mid-air. There are three types of people living here: clones, cyborgs, and robots. Human society has entered a new era of civilization. From time to time, the echo of time echoed in the sky, every 32 hours, and the sound reverberated back and forth, and everyone would realize at this moment that another day had passed. These clones appear emotionless, have a dull expression, and seem to have inherited the DNA of all the experiences of all human failures and successes. Every day there will be different meteorites from the air, in this regard, the people who live here have been strange, sometimes some people are hit by meteorites and die, so human beings have invented a kind of "light shell" equipment, in case of a meteorite impact can be used, the light shell will turn people into the yolk in the egg to protect up, the difference is that the light shell is extremely hard, meteorites can not pass through...

Billboards in the city read such information as "Emotional Experience Room", "Roots", and "40-year round-trip ticket discount" for round-trip ferry tickets to Earth.

Like human beings in the past, technology is still advancing, and the territory has become more extensive, but happiness is not so easy to obtain.

Cyborgs and clones and a society where robots coexist, all of whom are in conflict over the sovereignty of their planet. The clones claim to be the only heirs to the planet that legitimately inherits the heritage of humanity. Cyborgs believe that they are the best planetary adaptors born from the most perfect combination of machinery and biology after the Eighth Industrial Revolution. The robots, on the other hand, do not say a word, and always give the best solution to the clones and cyborgs after the dispute between them is completed and calculates the contradictions of their dispute in the fastest way. The absolute rationality of the robot reconciles the other two species, and everything seems to work in perfect order.

On the planet Gliese 581d, the best entertainment for people is to walk in the city sky and see the planet scenery from afar; At the same time, it is also a shared memory, those memories brought from the shared super servers of humans two centuries ago will always have a warm smell, and people are smiling in the air, and they look particularly moving in the light of the light, which is the only motivation for them to survive. Since the cloning technology was produced, the memory in their brain is different from that of normal people, and the memory begins to fade slowly, from 15 to 10 years, 3 years.... Due to the increase in age, some clones can only maintain their memory for 3 days, and people need to touch the memory hard drive to communicate with each other. In order to insure the period, each of them has a 6-year super memory chip implanted in their cervical spine, and everything will be backed up to this super memory chip.

Due to the gravitational and oxygen-adapting body structure of the earthlings directly transplanted to the Gliese 581D, people were initially able to survive and survive due to the genetic tupu and some of the food carried by the spacecraft...... Over time, all of their physiology began to slowly change due to weightlessness and the scarcity of oxygen, the most obvious changes were: 1. Sex disappeared, and all people were produced by cell clones. 2. Language disappears, and people communicate directly through brain waves; Thankfully, the food seeds brought from the earth, due to weightlessness, led to the growth of fruits that were five times larger than their original size, which was a big reason for their survival.

On the huge planet, humans still continue the habit of trying to find other civilizations in the surrounding area. They were also covered with satellites over Gliese 581d, trying to find a partner from the periphery.

Luckily, there were some replies from nearby civilizations soon.

First reply:

They came to the third year of Gliese 581d, and the feedback came from a small satellite next to Gliese 581d, and the clones received some bands from the transmitted receiver that they also couldn't understand. So they took a few people on the spaceship and went straight to the satellite, this landing did not lead to the discovery of life forms, but they accidentally found a material to replace the spaceship, which brought a revolutionary leap forward in human cloning technology.

Second reply:

In the twentieth year of their entry into Gliese 581d, many of the old satellites launched have begun to enter the phase-out period, and the authenticity of the signals cannot be ensured, and these signals transmit some similar coordinate numbers to Gliese 581d through the frequency band, and then all the satellites failed, and only 20% of all the data received before remained. According to the clones' calculations, they were the coordinates of the other two human ships in the three ships that set off with them. However, there is no indication as to why the satellite was destroyed.

Third reply:

In the fiftieth year, in a pile of meteorites that flew in, they found a meteorite containing fossils of living organisms. They carefully extrapolated the meteorite and found that it came from a planet called Y3 in the same galaxy. So they launched five spacecraft to explore Y3, and when they landed, they made a major discovery, that there were the same giant beasts on the planet as they did during the Jurassic period, and the interesting thing was that these giant beasts did not need oxygen at all to survive. This was the first sign of life they had ever found since they inhabited Glizer 581d.

But on the way back, three ships inexplicably disappeared, and the other two ships brought back some small living creatures, these living creatures resembled birds, but with four claws, breathing fire, and their eyes changing color, and the creatures were placed in their own research room, and due to their incompatibility with the living environment, these creatures turned into metal objects within a few days of being placed there.

Climatic causes caused the genetic map to be damaged, the clones found that the only difference was to repair their genes, at first they tried to repair the original on their own, 100,000 experiments, found that the memory decline of people is getting worse and worse, the worst situation is that many of the newborn babies die when they reach the age of two. After a vote by the clones of the entire planet, returning to Earth was their only hope, and in the end, the fate of the entire planet fell on the twenty technologically advanced clones on this planet......

They boarded three spaceships and set off from Gliese 581D to the galaxy far away...

After twenty years of flying, they finally arrived at their former home, Earth.

In the eyes of the clones, this planet seems to be only seen in textbooks or memory images, so strange and yet so familiar...

At this time, a moving dot on the Red Sea flashed above the ship's gauges......