"The world we live in was originally a chaotic river, because because we angered God, God cut off the upstream and downstream of the river, and turned the river into a circular lake. All of us are born and sick in the lake, and then give birth to new life. Time no longer flows to the infinite distance, but flows back to the beginning after passing through a gate. All suffering will repeat the mistakes of the past, and all happiness will turn into pain in the repetition of repeatedness, and the world will become hell, and this is God's punishment for us. ”

"This is the story engraved on that bronze plate, through which the sage told us the most crucial information, gave us a basis for speculation, and gave us clues to guess the Void's life patterns, attack methods, and even weaknesses that could be used by us. ”

Dr. Ji fell into the memory again, and after a while, he suddenly came back to his senses and said, "I'm sorry, I'm distracted, people are easy to get distracted when they get old, I continued." ”

"After our speculation, we judged that the reason why our population and technology have dissipated greatly is because the Void relied on the weapon of the law of cause and effect to strike at the original cause of the development of the human race. Perhaps it was the obliteration of the beginning of Terran civilization, the first primitive Homo sapiens to be curious about the sky, or the intervention of primitive Homo sapiens in the war with other races, spreading some kind of virus that led to the demise of primitive Homo sapiens, or plunging the entire planet into a nuclear winter during the world war during the early Federation merger. However, we have not been able to find the real cause. ”

"The demise of the Terrans continued, and the people on the Hope began to disappear, and to be honest, we were all desperate at the time, because there was no hope left. ”

"As the story goes, we were cut off from the water upstream, and there was little that could be done to change that outcome except to wait for it to dry up. This is the fundamental theory of the causal weapon, and we cannot change the effect when the cause has been constructed and a stable chain of cause and effect has been formed, unless we can change the cause in the first place. ”

However, this is impossible, because time is irreversible, and even if we increase the speed above the speed of light, we will not be able to reverse time and space like in science fiction, which is just a beautiful fantasy that cannot be done in reality. ”

"But, why did the Void do it?" Fengyun's thoughts had been brought into orbit by Dr. Ji, and he forgot that what was in front of him was a video, and subconsciously asked.

Dr. Ji didn't answer, his eyes narrowed, and the corners of his mouth flashed a bitter smile, as if he had returned to that time, and he continued, "The future of all races is pinned on my team, and as the name of this spacecraft suggests, we are their hope. My team began to have people commit suicide, and under this tremendous pressure and despair, they chose to liberate themselves and keep their last dignity. I wanted to be like them, but I couldn't. ”

"In the early days when the human race had not yet left its home planet, a thinker had a metaphor: if an iron house was windowless and indestructible, and there were many sleeping people in it, they would soon suffocate to death, but they would go from slumber to death, and they would not feel the sorrow of death. Now that thou hast cried out, and hast stirred up some of the more sober men, and brought this unfortunate few to the irremediable agony of death, do you think that thou art worthy of them? ”

"I told all the leaders elected by the surviving Terrans about the reality, and he was a wise man, and he believed that since the Void was able to touch the beginning of Terran civilization along the weapon of the law of cause and effect, it proved that time was reversible, but we had not yet found a way. ”

His words gave us great confidence, but on the second rotation, he also disappeared. ”

"My team is experimenting day and night to restore the Grade A material, which is the direction to re-enter the curvature engine. But a lot of counterintuitive, bizarre experimental data tells me that the Void is still watching us, watching us make our final struggles, but cutting all the straw we can grasp. ”

"It makes me more and more desperate, but also more and more hopeful, the void is interfering with him, that means that what he is doing is what worries him, as long as he persists, he will definitely find a solution to the dilemma. ”

"However, during that time, the force field around the parent star changed, and after observation, we found out to our despair that it was due to the presence of a big guy around the parent star. ”

"The core of the change in the gravitational field is in the center of the sun, and the increase in gravity has reduced its size by one-third, and the twelve planets have begun to gradually approach the sun with the change of gravity, which is a gradual process, but it will not take long. The Sun is still in its prime, and even if it dies, it will expand into a red giant star first, and it will never shrink. ”

"After calculations, we determined that the reason for the change in gravity is likely to be due to the appearance of a large neutron star in the interior of the Sun, which will be more than 45.2% of the size of the Sun. Its gravitational pull is so strong that it has already affected the gravitational field of this star field before it appears here, and once it appears, all the matter in the entire solar system and even the larger star field will be absorbed by it, allowing it to grow into a young black hole. ”

"It's like throwing a magnet from somewhere in the universe and destroying everything around it when you reach your destination!

"This kind of top-notch quantum-level attack method can be done even if it is difficult in the heyday of the human race, but now, there is only one person who can launch this kind of attack. ”

"The Void has no intention of letting us go. ”

"The end is a foregone conclusion, and in order to respect the right of every federal citizen to know, I have told everyone the truth of the matter, and I don't want them to be kept in the dark until they die. ”

But not everyone has the courage to face despair, there was a riot on board the Hope, and the survivors were divided into two factions, one group has completely given up, they have become hedonists, drinking all day long, indulging in the pleasure of soothing robots, and covering their inner fears and unwillingness with the most primitive pleasures. The other faction became the extremists, and they were going to take the Hope hostage and flee, but they gave up, because half of my team also joined the extremists, and they told them that there was no escape. ”

"It's terrible that the extremists have lost their goals, because without them, there is no hope, and at this time, they are even more miserable than the hedonists. They are desperate to find a direction where they can fight for survival. ”

"The Terrans are still disappearing, and neither the hedonists nor the extremists can avoid it, and the hedonists often die of pleasure, and the extremists are caught up in fighting each other day and night, and at this time, rumors appear. ”

"There is news circulating among the extremists that it is theoretically possible to reverse time, but the resources on the Hope are not enough for everyone to embark on a journey, and that I, who have mastered this technology, are secretly building small flying machines for my loved ones to escape. ”

"In a desperate environment, such a leaky rumor became a lifesaver, and people were outraged, and they rushed into the experimental center and arrested me. ”

Dr. Ji touched his waist and said with a smile: "I was beaten five ribs that time, and that feeling is still fresh in my memory!"

"I know who spread that rumor, but I don't blame her, she's my most talented student, but she doesn't believe in science. However, it was she who made me realize that maybe a false hope was what they needed most, right?"

"They don't dare kill me, because it's up to me to help them build faster-than-light machines. I told them that the gravitational field in the solar system had changed, and that we could use gravity to reverse time by bringing the spacecraft to the speed of light or even faster. ”

"I'm lying, even if it was theoretically possible to use the gravitational pull of that neutron star to accelerate the spacecraft to nearly the speed of light in a short period of time, it would be time to plunge headfirst into the neutron star. Because with the power generated by Hope's current resources, it is completely insufficient to escape the gravitational pull of that neutron star. ”

"The lab center is getting deserted, and my team members, my students, have joined the hedonists one by one, and they can discern the loopholes in my lies, they are the most pitiful compared to those who are immersed in lies, and I really regret teaching them knowledge, otherwise they would have been happy to spend the last period of their lives. ”

"I've been working quietly, but instead of developing a high-efficiency thruster, I'm upgrading the particle accelerator that comes with Hope. That's what the Void wants to see, so he didn't stop me. ”

"The gravitational pull of the upcoming neutron star is getting stronger and stronger, and my heart is getting calmer and calmer, in fact, in my bones, I am still an extremist. ”

"Our technology has been limited to the quantum level, and now there is only one way we can fight back. It was a weapon that the human race came into contact with at the beginning of the development of science, when it first learned about the universe - vacuum decay. ”

"You may not understand, but let me explain it briefly. The basic principle of ancient quantum theory is the uncertainty principle, because all the properties of quantum objects do not have completely deterministic values. The uncertainty of energy can lead to strange effects, where particles such as photons can suddenly spawn out of nothingness, only to disappear again immediately afterward. In fact, what is commonly thought of as a vacuum is indeed filled with a constant stream of such instantaneous particles, not only photons, but also electrons and protons. To distinguish this instantaneous particle from the permanent particle that we are more familiar with, the former is called a "virtual" particle, while the latter is called a "real" particle. ”

"To put it simply, what we call a vacuum is actually a pseudo-vacuum, seemingly empty, but in fact there are countless ghostly virtual particles that appear and disappear in unimaginably short moments, and this instantaneous drama of creation and destruction is endlessly staged at every point in space. The quantum state transition of virtual particles is the transition process from the quantum at the high energy level to the low energy level, these seemingly disillusioned particles contain huge power, and our so-called vacuum is actually a boiling quantum ocean, which makes the vacuum have a certain energy level. ”

"By operating at maximum power of the particle accelerator, we can accelerate the particles to 10 to the 20th power of the gigaelectron volts, which is close to the energy of the Big Bang, and this high-energy process may produce a vacuum in another state, which has a lower energy level than the existing vacuum, and may even have a "true vacuum" with zero energy level. The volume of this vacuum may be only one atom at first, but once it is formed, the surrounding high-level vacuum will fall to its energy level and become the same low-level vacuum as it, which makes the volume of the low-level vacuum expand rapidly, forming a spherical shape, the expansion of this low-level vacuum ball will soon reach the speed of light, and the protons and neutrons in the ball will decay in an instant, which will make the material world in the ball all evaporate and everything will be destroyed. ”

"Weapon deterrence?" Fengyun stared at Dr. Ji in the light curtain, and said in a low voice: "You want to ignite the vacuum of the entire universe and destroy everything, you are a madman!"