Starting as a Wallfacer, his defection to the Three-Body Problem shocked the world.

Crisis Era 6 Years.

Lin Xuan has postponed her graduation.

That's right, the University of Chinese Academy of Sciences gave him a delayed graduation and a warning regarding his academic status.

If Lin Xuan doesn't retake all 30 courses from his sophomore to senior year, he will be held back for a year.

When Lin Xuan saw the academic warning notice from her alma mater, she was completely dumbfounded.

Good grief, this school is really stubborn. They know they are Wallfacers, yet they keep giving themselves warnings again and again.

Even the G7 doesn't dare to issue warnings to themselves, but the University of Chinese Academy of Sciences does; it's even more impressive than the PDC.

Liu Chang, the vice president of the University of Chinese Academy of Sciences, said that this matter had nothing to do with him and was definitely not at his behest.

After a year, Liu Chang's cloning technology research has begun to show results.

"How about it?"

Lin Xuan looked with great interest at the various experimental subjects displayed in the laboratory, which were neatly arranged in culture jars like specimens.

"It's the same old problem: the success rate is too low."

Liu Chang let out a long, helpless sigh.

“I have conducted repeated simulation experiments in the dream world, but as you know, humans are almost a blank slate when it comes to cloning technology, so for many problems, I can’t even find a reference model.”

"Isn't this great? It's time to prove your talent, Principal Liu. If you can develop this thing, you'll be the number one in this field."

Upon hearing this, Liu Chang rolled her eyes at Lin Xuan.

"Don't try to fool me with empty promises. Being the first person is a mistake; you'll be lucky if you don't become a sinner for all time."

As he spoke, he pointed to the culture tanks behind him.

"Do you know how many people I've personally killed this year if these test subjects were considered human?"

"1183, that's more than a thousand lives!"

"Even the most insane murderer can't kill as many people with their own hands in a whole year as I have in just over a year."

Liu Chang's eyes were calm and collected; he finally understood why humanity had banned this research.

The cultivation experiment could not succeed on the first try. Even though he had simulated the data model many times in the dream world, biology is complex and ever-changing, with hundreds of billions of times more variations than physics.

Because you simply cannot calculate exactly how each cell will divide and engulf, the results are unknown at the start of the experiment.

In such a situation, to conduct research in this field, a huge number of people would have to be killed, and the value of those people would far exceed the value of the experiment itself.

Although Liu Chang kept telling himself that the test subjects were not real humans, the guilt in his heart continued to grow day by day, making it hard for him to breathe.

"What did you do with the corpses of those discarded experimental subjects?"

Lin Xuan suddenly thought of a question.

"You donated it as an organ? Or are you saving it to eat during the New Year?"

Liu Chang looked at Lin Xuan with a strange expression.

Hearing this, Lin Xuan breathed a sigh of relief.

"Oh, all right."

He was genuinely afraid that Liu Chang would give those things to the kitchen to cook, causing them all to experience the Dark War two hundred years ahead of schedule.

After a year, Lin Xuan has expanded the Red Coast Third Base more than twice its original size, adding three more laboratories.

Built on a lake, Lin Xuan constructed an artificial floating island in the center of the lake and then moved Ding Yi's nuclear physics laboratory onto it.

There was no other way; when he was researching controlled nuclear fusion, the laboratory needed to continuously release extremely high temperatures, and ordinary water cooling technology could no longer meet the requirements of this experiment, so he had to move it to the center of the lake.

Liu Chang's biochemical laboratory was buried underground, and no one except some staff members was allowed to enter.

After all, once human experimentation is exposed, the PDC will definitely be on high alert.

It's not time to expose ourselves yet, at least not now.

Wang Miao originally had his own independent laboratory, but he later refused it.

There was no other way; he was probably the person who traveled the most in the entire Red Coast Base, spending almost every day near the equator personally overseeing the construction of the space elevator.

The construction of the space elevator project is progressing faster than Lin Xuan promised the PDC at the Wallfacer hearing. Now, with about seven or eight months left until the seventh year of the Crisis Era, Wang Miao's three space elevators have already reached the position of near-Earth orbit.

However, a major technical problem has now emerged.

How should we continue this development?

Wang Miao's previous plan was to first build a super-large space station in geostationary orbit, then connect a counterweight to the other end of the space station, and finally connect the low Earth orbit section to the space station in space.

Because the Earth is constantly rotating, the space elevator could only be built from its ground base upwards, reaching a height of near-Earth orbit at most.

This is still the effect of reinforcing the underlying rock layer of the base.

Adding any more weight would create an enormous amount of weight, enough to collapse the entire ground.

Therefore, the only option is to first build a space station in geostationary orbit, and then find a way to connect them little by little.

This space station in geostationary orbit rotates at the same speed as the Earth, rotating along with the Earth's rotation, so it is relatively stationary relative to the ground.

However, if it were directly connected to a space elevator located in low Earth orbit, it would basically mean that everyone had worked for nothing all year, as the immense pressure would drag the space station down to the ground like a meteorite.

Therefore, at the rear of the space station, a counterweight that can accelerate rotation needs to be placed so that this counterweight stays in space at a speed exceeding the first cosmic velocity, which is the speed that keeps objects from falling down in space, thus straightening the other end of the elevator.

You can think of this model as a small ball with a string attached to it.

The human hand is the base of the earth. Grab one end of the rope, and then keep rotating your body to swing the ball up.

In this way, the rope will be stretched taut by centrifugal force, while your hand and the ball being flung away will be in a relatively static motion.

Once you stop rotating, the space elevator will collapse instantly.

The problem lies with this counterweight.

The location of a low Earth orbit is approximately 400-2000 kilometers above the Earth's surface, while the location of a geostationary orbit is approximately kilometers above the Earth's surface.

How far is that already?

But that's not all; there's a counterweight above their heads.

The distance between the counterweights needs to be determined based on the size of the space station; the larger the space station, the farther away the counterweights need to be.

It's like hanging a dumbbell in the middle of a rope and expecting the ball to continue flying due to centrifugal force. Not even Tyson could do that, let alone you.

Therefore, after Wang Miao's calculations, he discovered that if a space station with a weight approximately the same as the International Space Station were to be built, the counterweight would have to be at least a kilometer above the Earth's surface.

Goodness, this is almost as far as the moon! You might as well just use the moon as a counterweight.

However, the price of doing so would be the direct destruction of the Earth by the tidal effect.

Ultimately, Wang Miao was also at a loss, and there were only two best solutions at the moment.

First, increase the toughness of nanomaterials so that the counterweight can pull the space station even if it is not that far away.

Second, reduce the size of the space station, keeping it to the size of only a house.

Neither of these two options seems feasible.

The first option is that if humans can really create materials with such high precision that are both tough and lightweight, then their technological level would be at least comparable to that of the Trisolarans.

Back then, who needed a space elevator?

The second option is even more useless.

If the size of the space station is reduced, what's the point of building it? Is it going to become a popular spot for couples to take photos?

Why not just open a tourist attraction underground, where people can buy tickets to go up into space and see the stars?

Just when Wang Miao couldn't think of a good strategy, Lin Xuan came up with a solution.

Have you ever ridden a bus that announces the stops? You know, the kind where you're at the station and you can see how many stops until the next bus.

Wang Miao nodded.

Do you know how he managed to announce the stops?

Wang Miao thought for a while.

"Install a GPS positioning module in the car, and then detect the car's location?"

"Bullshit."

Lin Xuan shook her head.

"You're really extravagant. How much does a GPS tracking device cost? If you install it on every bus, plus the maintenance costs of the GPS itself, the daily cost would be more than your life. The entire bus company would probably go bankrupt."

Wang Miao: ? ? ?

"No, bro, what kind of analogy is that? Is my life really that worthless?"

Lin Xuan smiled.

Do you know how they did it?

Wang Miao shook his head.

"ZigBee technology is a very primitive short-range communication technology."

"This thing has no other advantages except that it has low power consumption and is very economical. It turns off by itself when it is not in use and only turns on when it is activated, just like the motion sensor lights in the hallway."

Wang Miao was somewhat puzzled upon hearing this.

"That's not right. The bus stop is at least several kilometers away from the bus. I know about ZigBee technology. It's short-range transmission, at most about 100 meters. It's not even as good as WiFi."

That's why I say their method is ingenious.

As Lin Xuan spoke, she rummaged through a pile of trash beside her for a while and took out an empty water bottle and a few small hair clips.

He arranged the hair clips neatly to simulate a bus stop, and used the water bottles to simulate a moving bus.

Then he placed a magnet on the car and on the clip.

"See? Install a ZigBee module on the car and another one at the bus stop. When the car arrives at the stop, the two ZigBee systems will activate each other."

Sure enough, when the empty water bottle moved to the station of the first small clip, the two magnets were instantly attracted to each other.

Wang Miao knew that Lin Xuan was simulating the reaction after the ZigBee module was activated.

"See, as you said, this thing's transmission distance isn't even as far as WiFi, so let's change the transmission method directly, turning it from a transmission method that continuously sends signals to the main station into a device that only sends signals to the station."

“Whenever the vehicle approaches the platform, it is usually within 100 meters of the platform. At this time, the ZigBee module on the vehicle and the ZigBee module on the platform will act like magnets, transmitting an activation command to each other.”

"Then once the platform is activated, the platforms behind it can directly know where the train is now. This is how the most basic items can play the most efficient role, and I just modified their transmission method."

Wang Miao looked at the model in Lin Xuan's hand, and his eyes suddenly lit up.

"Shock level from Wang Miao +100!"

"Holy crap, Lin Xuan, you're a fucking genius!"