Luo Ji's deterrence made the three-body problem dare not invade the earth one step, and mankind jumped from the crisis of extinction to the frenzied joy of victory.

This crazy state of mind is like a roller coaster.

No one knows the hidden dangers, and after Zhizi unraveled human quantum research, human technology has not been significantly improved.

Because the theory of the earth has been stagnant for more than 200 years, and the Trisolarans have been carrying out technological innovations, their gap has never actually been on the same starting line.

Logitech, on the other hand, has the ability to master the switch of the gravitational wave transmitter, and only he has the ability to master the death switch of the two civilizations, and others avoid it.

As soon as Luo Ji relaxes, the attack of the Three-Body Problem will be launched immediately.

At the same time, there is an argument on the earth, that is, does the star that Luo Ji destroyed before also have a living planet?

Did Luo Ji kill an innocent civilization?

This question was not instructed by the Three-Body Man, but by human beings themselves, and many people believe that Luo Ji is the murderer of destroying a civilization.

Zhang Xuan had no interest in all this, and the human race briefly returned to peace, but after the crisis, their vigilance did not increase.

Today, Zhang Xuan went to the ship of the Trisolarans, there was a human being, named Yun Tianming, the reason why the Trisolaran dared to say that they wanted to analyze human thoughts was that they had a living person in their hands.

In the fourth year of the crisis era, Yun Tianming, who was terminally ill, received a gift of a check worth 3 million yuan, which was given by his classmate Hu Yue.

Because Hu Yue went to open a beverage factory to make drinks because of Yun Tianming's casual idea, many years later, Hu Yue had already made a fortune, in order to thank him, and to help Yun Tianming, who was terminally ill, so he gave 3 million.

But all this has done nothing, and now Yun Tianming is already at an advanced stage, and the cancer cells all over the body have spread. In the past few days, Yun Tianming is thinking about euthanasia.

Euthanasia has been legislated, and many people are already euthanizing. It's just that before he died, Yun Tianming remembered his crush.

Cheng Xin, this is Yun Tianming's college classmate, they studied rocket engineering together, Yun Tianming has always been a withdrawn person, so the relationship between classmates and relatives is very cold.

In his life, only Cheng Xin gave her a beam of light, and for this reason, Yun Tianming decided to give Cheng Xin a gift before he died-a star in the universe.

After that, Yun Tianming carried out the euthanasia plan with peace of mind. In the ward, Yun Tianming followed the instructions and chose five times in turn, each time to make sure that he was willing to euthanize.

Five times later, the doctor came in and tied Lin Tianming, the euthanasia agent was injected by the machine, and after the doctor went out, Yun Tianming closed his eyes and remembered the girl in the dream, Cheng Xin.

For this point, Yun Tianming and Luo Ji are the same, the difference is that Yun Tianming likes a real girl, while Luo Ji likes an imaginary perfect girl.

Feeling the needle of the machine, slowly approaching his skin, suddenly a footstep sounded, and in the dim ward, a group of people broke in, and they immediately pushed the machine down.

Yun Tianming opened his eyes and saw that his dead heart came alive, this is his haunting Cheng Xin, the story in his dreams, the beloved girl saved him at the last moment of the male host, is there a more fairy tale story than this? Three k

But the next sentence from Cheng Xin shattered Yun Tianming's heart, Cheng Xin looked at Yun Tianming eagerly and sincerely: "Tianming, do you know? The euthanasia bill was passed for you! ”

After that, Yun Tianming's spirit was extremely decayed, and he suddenly aged a lot. Cheng Xin is just an ordinary woman for Zhang Xuan.

But people are different from each other, and Cheng Xin is also different, that is, he is weak by nature, ruthless, selfish and indifferent, born with a little bit, and strengthened the day after tomorrow.

Cheng Xin is an orphan who was adopted by her adoptive parents since she was a child, and she knows about it, so Cheng Xin is not close to her adoptive parents, and she has a natural sense of alienation.

This sense of alienation is Cheng Xin's natural armor, keeping a distance from everyone, smiling calmly and amiably, all of which are her appearances.

In Cheng Xin's heart, she didn't want to be sorry for anyone, nor did she want to get in close contact with anyone, she only focused on her own purpose, in the eyes of cultivators, Cheng Xin was the Demon Dao Seed.

In the aftermath of the crisis, when the world was chaotic and academically more radical, Cheng Xin left the chemical-fueled engine research group because she had realized that chemically powered rockets, like fireworks, could not lead people to explore the universe.

After the establishment of the Planetary Defense Committee by the United Nations, the Strategic Intelligence Technology Planning Center and the Aerospace Research Office, Cheng Xin did not hesitate to join in.

The director of the center is named Hamill, who is a Russian, and the director of the aviation department, named Thomas Vader, is a typical military man.

At the beginning of the center's work, Wade ordered the first phase of the mission to be launched, which was to bring the spacecraft to one percent of the speed of light, that is, to increase the current speed of aviation to a hundred times.

This is impossible, even if Wade said that it is necessary to change the principle with resources and use brute force to achieve it, this kind of absurd words will naturally no one care.

But Cheng Xin said: "We can bypass the principle, space probes don't necessarily need engines, we can use nuclear weapons to propulsion!" In the absence of a technological breakthrough, this is the only way to do it.

Put a detector with a huge radiant sail and propelled by a nuclear bomb explosion. And this nuclear bomb is not placed on top of the probe, but after the course of the probe.

With the help of the impact of the nuclear bomb explosion, the radiant sail of the detector produces directional acceleration, and it only needs to calculate the position of the nuclear bomb above the initial route line, and each explosion will produce a new propulsion, which I call single-route propulsion!

Depending on the quality of the detector, the placement of different numbers of nuclear bombs can propel the detector to one hundredth of the speed of light! After that, it is stable enough to fly in the specified direction! ”

Cheng Xin's plan seems to be fantastical, but unexpectedly, Wade actually agreed to this plan and named it the Ladder Project.

In the feasibility design, the radiation sail of the probe is designed to be very light and thin, 50 square kilometers of radiation sail, made of human advanced nanotechnology, only about 50 kilograms.

In order to get into one hundredth of the speed of light, the detector has to be very light. To do this they pass calculations. Detectors of three to two tons, one ton were verified, but after calculations, they still did not meet the technical requirements.

With the nuclear bomb resources provided by the Planetary Joint Council, the mass of the probe can only be controlled within 180 kilograms, which also includes communication devices and detection devices.

At the Council on Planetary Defense, Vader proposed the Ladder Plan, but it was not approved because of the huge investment and small gains. No matter how fast it is, it's just a detector!

Even so, there are still large countries that are very interested in propelling the probe to 1% of the speed of light, and are willing to make some funding, but this can only be done in secret.