The counselor said hoarsely: "Dear students, the distance between our planet is about 202,210 kilometers from the big ice hockey behind it, which is 1.3% different from the original estimate. The distance shortened every ten years is about 10,000 kilometers..."

The two planets do not circle each other, but are on almost the same orbit in a form of a front and back arrangement.

That is, both sides move elliptically around the centroid of the two neutron stars.

However, the gravity between planets is inversely proportional to the quadratic distance. The closer the two planets are, the greater the gravity will be, and it will accelerate the closer they are.

Now the distance shortens by about 10,000 kilometers every decade, but in the next ten years, it may be shortened by 11,000 kilometers, and so on, eventually getting faster and faster until it hits together.

"...so, we must maintain a stable construction speed and increase the driving force of the planet's engines to avoid collisions between planets."

Speaking of this, this time, the special-purpose car of the big social class finally reached the peak of the mountain. People saw countless excavators mining in a large basin, and rail trains transported the ore away and crushed it.

These ores are basically ordinary silicates and have no smelting value. They will turn into working fluids and become violent plasmas and spray them out.

Wang Haifeng and a car of people will basically work in this regard in the future. This project looks very simple, but it is actually very complicated. It starts from mining, then transportation, then crushing, and finally turned into fuel.

A large construction site requires a population of more than 100,000, and the number of robots and various machinery is at least more than 10 million.

Although most of the work is automated, there will always be some mechanical failures and mechanical maintenance.

The aging of parts is an inevitable problem in the universe. Even if only robots maintain machinery, they will still age. Complex production lines will cause various bugs, which need to be handled by humans.

Therefore, after Wang Haifeng graduated, he will join the excavation work group No. 009873 and become a very accurate screw and devote his life.

Their future has been planned.

Everyone's eyes were slightly dull, as if they were frozen, looking at the bustling scene in this large industrial base.

"Everyone, after this class, you are about to graduate... Do you have any questions to ask?" said the university counselor again.

She is a gray-haired old man who is still working hard at work.

Four hundred years ago, the population of the new human civilization expanded to 100 million.

The huge population has brought enough labor, so that in 800 years, humans have completed more than 80% of planetary engines! For the remaining six hundred years, only the remaining 20% ​​are needed.

However, as time goes by, a large number of machines purchased from the trading market began to depreciate, which was a difficult problem, so that the construction rate of planetary engines gradually slowed down.

In addition, in the agreement with the interstellar trading market, the future curvature spacecraft can only carry a population of 40 million at most.

Therefore, the government is preparing to slowly recover from the current 78 million to below 40 million in the next six hundred years.

In this way, changes in population structure will inevitably lead to aging.

"Teacher, can you change a job? A slightly more interesting job?" Suddenly, a boy next to Wang Haifeng said. After he finished speaking, many students' bodies trembled.

Although this construction site is spectacular, do they stay here for the rest of their lives?

"Of course, if you have enough professional knowledge, you can go to build construction machinery. We have many machinery that will be eliminated in the future, and you can also go..."

"I mean, more interesting work."

“Interesting, what is interesting work?”

"For example, rap, drawing comics, programming games, etc.... you can choose your own job."

The counselor frowned and said with a smile: "In the past, when the entire plan had not been implemented, there were indeed many interesting laboratories where you could do the job you like. But now, these laboratories have been banned. Unless you have excellent grades to another level, you can do some scientific research, and you can also complete what you like in your spare time."

"After all, we ordinary people are all fighting for the greatest cause in the world."

All the students were silent.

Suddenly, the boy spoke again: "The greatest cause in the world is to use hundreds of thousands of excavators to dig the ground larger in this basin? Finally, scraping off the surface of the entire planet hundreds of meters?"

The boy's tone was strange, as if it was a kind of ridicule, and with a hint of helplessness.

"Ah, yes. This is the greatest cause. My teacher taught me this way. She devoted her life like this, and I am the same, and then it's your turn."

Unexpectedly, the counselor did not refute.

Maybe she thought about it this way when she was young, but now she is old and is about to retire, and she no longer goes back to think about such complicated things.

I have been here like this for the rest of my life, what else can I think about?

The students were silent and didn't say anything.

The next stop is the big ice hockey that follows behind the butt of the "Planet Fortress". Everyone boarded the spaceship and headed to the big ice hockey numbered "js144".

The temperature of this ice hockey is even lower, below minus 250 degrees Celsius, and the thick ice layer is harder than steel. At this temperature, all the gases form thick ice cubes.

There are also some industrial bases above the ice hockey, which are mining hydrogen fuel, oxygen, methane and various chemical substances. As long as the ice is cut down with a robot and simply purified, these substances can be obtained.

Looking up, Wang Haifeng saw the trembling flames slashing through the dark starry sky, as if they could pounce on their faces.

The planet in front of them with colorful light is the planetary fortress they have used their best efforts to develop.

The violent plasma light is different due to the different nuclei. The copper ions are blue, the iron ions are yellow, and the manganese ions appear pink. They cool and condense here, forming a large black haze.

This planet pursuit war will last for at least four hundred years. Either humans will be completely victorious, or two planets will collide and fail completely, without any other result.

"Do you want to succeed or fail?"

Seeing this scene, everyone was silent. Even the angry boy couldn't speak when he looked at the planet filled with colorful light.

Some people think of escaping halfway through, escaping this place, and giving up the entire plan.

But they did not dare to say it. Those brilliant ion flames seemed to ignite the entire civilization. Whoever dared to say escape was the sinner of history and the sinner of civilization.

The greatest cause?

Who knows...

Who can define what is called greatness?

Is it great to do my own work tremblingly throughout my life and be a society's screw?

No one can answer.
Chapter completed!