The sight outside the community reminded Jiang Shiliu of the crisis two centuries ago, when quite a few people regarded Jiang Yu as a savior.
Back then, many worshiped in front of Jiang Yu's residence, and some even burned paper offerings for him, which left Jiang Yu both crying and laughing.
Logic closed the window tightly, as if he hoped to keep those people outside his world.
To Jiang Shiliu's sentiments, Logic simply said, "Since you are born human, you have no choice."
In the small living room, besides Logic, Jiang Shiliu, and Thirty-Six, there was Shi Qiang.
But Shi Qiang just sat quietly in a corner, listening to their conversation.
The heavy topic they had been discussing was tacitly dropped by everyone.
Jiang Shiliu asked Logic, "We have come to Earth to attempt an attack on 'The Waterdrop'. Do you have any suggestions?"
Logic countered, "What means do you plan to use to attack 'The Waterdrop'?"
Everything that could be tried had been tried, and, to people's dismay, it was discovered that all of humanity's weapons were ineffective against "The Waterdrop."
"The purpose of my visit is to explain to you the Wallfacer Plan of Jiang Yu," Jiang Shiliu answered. "I took over the research of the 'Wandering Earth Project', also known as 'Project One' research team, more than a year ago.
"This project group, which has existed for a century, has been diligently studying gravity, but unfortunately, we do not have particle accelerators to substantiate our research.
"However, it is possible to try to prove some hypotheses with practical applications.
"Of course, this is difficult and would waste a great deal of resources, and it might not even succeed.
"Now, I am confident in creating equipment that generates gravity, different from traditional electromagnetic devices, capable of launching a small gravitational field like a shell and maintaining it for a while.
"If we can engulf 'The Waterdrop' in this small gravitational field, we could disrupt its blockade over the Sun!"
Thirty-Six was taken aback. "Your research has already advanced to this stage?"
Seeing Logic and Shi Qiang a bit perplexed, he explained: "Generating a gravitational field is completely different from electromagnetism; theoretically, only large celestial bodies' gravitational influence is supposed to be perceptible on a macroscopic level.
"If we can freely create a gravitational field, it would mean that we are on the verge of creating artificial black holes!"
Jiang Shiliu laughed, "We have yet to master the technology for artificial black holes, but as you've mentioned, it's certainly a huge breakthrough.
"This groundbreaking theory is not my discovery; it is the research achievement of the famous high-energy physicist of the last century, Hu Guanghan.
"In a century of theoretical research, in the absence of reliable particle collision experiments, they used humanity's limited theories to make a multitude of hypotheses and speculations.
"This provides a vast array of references for new theories in fundamental physics. With these treasures, I believe that if we could conduct particle collision experiments, we would immediately make huge breakthroughs in the four natural forces, including gravity."
Jiang Shiliu sighed deeply before continuing, "I hypothesized long ago that dark matter might be the medium of gravity's propagation.
"Using many theoretical models, Hu Guanghan proved the existence of such a medium, which aligns with my opinion.
"Gravity is the force produced by two objects exchanging virtual particles through dark matter, which is consistent with the theories related to quantum mechanics from the Common Era.
"However, there has been no way to experimentally prove this hypothesis. I think that even if the medium of gravity isn't dark matter, it's some kind of material we have never discovered before.
"Hu Guanghan speculated that this material is likely the fourth dimension of the universe, and the medium of gravity should be visible within the fourth dimension.
"This thing is somewhat like the 'backboard' of the universe, something exceeding three dimensions that we can observe and perceive."
Seeing Shi Qiang somewhat puzzled, Jiang Shiliu explained, "Mainstream physicists believe the universe is four-dimensional, and humans, as three-dimensional beings, can never directly observe one of those dimensions.
"This is like a two-dimensional being made of lines that can never observe the third dimension of the universe!"
Thirty-Six asked with some curiosity, "If the assumptions you've mentioned are correct theories and laws, then even without a huge mass, a gravitational field can still be generated?"
"Theoretically, that's the case," Jiang Shiliu said. "It's not that there's no mass, but we'll use dark matter as the mass!"
"If my experiment succeeds, then we will possess an 'invisible attack force.'
"This is also Jiang Yu's approach to dealing with The Waterdrop—if it's so tough, then we shouldn't clash with it head-on."
He paused and then added, "The second approach is to try to use the electromagnetic force or the weak nuclear force to counteract The Waterdrop's strong interaction force, or to create a repulsive force under certain conditions.
"In short, it is about fundamentally dissolving The Waterdrop's strong interaction force.
"This is also very difficult because, well, we're unable to conduct microscopic experiments."
Jiang Shiliu sighed deeply and continued, "This is why I've come to Earth. Although these experiments might end up a complete failure, it's still better than sitting around waiting to die."
After several minutes of contemplation, Logic said, "I finally understand how Jiang Yu needs to cooperate with me, and how I need to cooperate with him."
Without waiting for others to ask, Logic looked at Jiang Shiliu and said, "My suggestion is, before you use The Waterdrop as a whetstone, first aim a high-power signal transmission antenna at the Sun.
"If you manage to lift The Waterdrop's blockade of the Sun, immediately order the Trisolarans to withdraw all their Waterdrops and invasion fleets.
"If they don't comply, don't hesitate to broadcast the coordinates of the Three-Body Star System into the universe immediately!"
Jiang Shiliu nodded, "I will!"
Logic smiled and said, "This is humanity's last hope. If your methods don't work, then we might as well not do anything and just enjoy life.
"Oh, by the way, according to the latest observations, the Waterdrop that is expected to arrive in the Solar System in three years has accelerated, correct?"
Jiang Shiliu nodded, "That's right."
Logic exclaimed, "Jiang Yu is really gambling with his own life! The movement of this 'Waterdrop' is very important to Jiang Yu!
"Next, I will seriously urge the Snow Project, and we must find its trail before this 'Waterdrop' passes the Neptune Orbit!"
Jiang Shiliu gave a wry smile, "Even if we can find The Waterdrop's trail, what use would that be?"
Logic chuckled, "At least Jiang Yu will be fully mentally prepared for the fate he is about to face!
"Go and implement your plan! Whether humanity has a future or not all depends on your luck now!"
...
After more than two months of travel, Gu Cheng and his companions finally returned to Jupiter City.
As they were about to enter the docks, facing the remains of only two-thirds of the original ring of Jupiter City, Gu Cheng had many emotions.
In less than half a year since his departure and return, human society had already undergone tremendous changes.
The passenger spacecraft that Gu Cheng was on belonged to Uranus. While picking up lifeboats in the Uranian colonies, Gu Cheng conscripted all the planetary ships of Uranus and transported more than thirty thousand people to Jupiter in one go.
Part of this group consisted of high-ranking officials of the Solar System State's Military, who had already been relieved of all their duties by Jiang Yu on their way back.
There were also some wounded and lower-ranking soldiers, whom Ai Qi had long since arranged to meet and assist.
As soon as he stepped onto the dock, Gu Cheng saw Jiang Yu with a cold face standing inside the dock.
Gu Cheng quickly walked over and knelt on one knee in front of Jiang Yu, "Not heeding your advice is the biggest mistake of my life. The vastness of the Milky Way cannot fill the regret I feel at this moment."