The counselor said hoarsely: "Ladies and gentlemen, the current distance between our planet and the big ice ball behind us is about 202,210 kilometers, which is 1.3% different from the original estimate. The distance shortened every decade is about 10,000 kilometers......"

The two planets do not orbit each other, but in an almost identical orbit in a front-to-back arrangement.

That is, the two sides move elliptically around the center of mass of the two neutron stars.

However, the gravitational force between the planets is inversely proportional to the quadratic of the distance, and the closer the two planets are, the greater the gravitational pull will be, and the closer they will be.

Now it's about 10,000 kilometers per decade, but in the next decade, it could be 11,000 kilometers, and so on, and eventually faster and faster, until they collide together.

“…… Therefore, we must maintain a steady construction speed and increase the propulsion of planetary engines to avoid collisions between planets. ”

Speaking of which, this time the special car of the big social class finally reached the peak of the mountain, and people saw countless excavators mining in a large basin, and rail trains transporting and crushing these ores.

These ores are basically ordinary silicates, which have no smelting value, and they will be turned into working fluids and ejected into violent plasma.

And Wang Haifeng and other cars, the future work, is basically this aspect, this project looks very simple, but in fact it is very complicated, starting from mining, then transportation, then crushing, and finally turned into fuel.

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

While most of the work is automated, there will always be some mechanical breakdowns and mechanical maintenance to be done.

The aging of parts is an inevitable problem in the universe, even if only robots can maintain machinery, it will still age, and complex production lines will produce various bugs, which need to be handled by humans.

Therefore, after Wang Haifeng graduates, he will join the No. 009873 excavation working group, become a very accurate screw, and dedicate his life.

Their futures are already planned.

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

"Guys, you're graduating from this class...... Do you have any more questions? The counselor at the university said.

She is an old man with gray hair who is still struggling at work.

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

The huge population has brought an abundant labor force, so much so that in 800 years, mankind has completed more than 80% of the planetary engine! For the remaining 600 years, only the remaining 20% needs to be completed.

However, as time went on, a large number of machines that had been purchased from the trading market began to depreciate, which was a problem that could not be overcome, so that the rate of construction of planetary engines gradually slowed down.

In addition, in the original agreement with the interstellar trading market, the future curvature spacecraft will only be able to carry a population of 40 million at most.

Therefore, the government is preparing to slowly recover from the current 78 million to less than 40 million in the next 600 years.

As a result, demographic changes have led to the inevitable aging of the population.

"Teacher, can you change jobs, a slightly more interesting job?" Suddenly, a boy beside Wang Haifeng said. After he finished speaking, many of the students trembled.

Although this site is magnificent, it is ...... Are they going to stay here for the rest of their lives?

"Of course, if you have enough professional knowledge to manufacture construction machinery, we have a lot of machinery that will be eliminated in the future, and you can also go to ......"

"I mean, more interesting work."

"Interesting, what's an interesting job?"

"For example, rapping, drawing comics, programming games, etc...... You can choose your own job. ”

The counselor frowned, then said with a smile, "In the past, when the whole project was not implemented, there were indeed a lot of interesting labs where you could do what you liked. But now, these labs are outlawed, unless you have good grades to another level before you can do some scientific work, or you can do what you like in your spare time. ”

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

All the students fell silent.

Suddenly, the boy spoke again: "The greatest cause in the world is to use hundreds of thousands of excavators to dig this basin bigger?" And finally scrape the entire planet's surface a few hundred meters? ”

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

"Ah, yes. That's the greatest thing I can do, and that's what my teacher taught me. She gave her life like that, and so did I, and then, it was your turn. ”

Surprisingly, the counselor did not refute.

Maybe she thought the same thing when she was younger, but now that she's old and about to retire, she doesn't go back to thinking about such complicated things.

It's been like this for a lifetime, what else is there to think about?

The classmates were silent and did not speak.

The next stop was the big ice hockey ball that followed behind the butt of the "planetary fortress", and everyone got on the spaceship and went to the big ice hockey ball numbered "JS144" 200,000 kilometers away.

The temperature of this puck is even lower, below minus 250 degrees Celsius, and the thick layer of ice is harder than steel, and at this temperature, all the gases form a thick block of ice.

There are also industrial sites above the puck, where hydrogen fuel, oxygen, methane, and a variety of chemicals are being mined, which can be obtained by simply cutting the ice with robots and simply purifying it.

Raising his head, Wang Haifeng saw the terrifying flames piercing the dark starry sky, as if they could pounce on their faces.

The planet in front of them, which bloomed with colorful light, was the planetary fortress that they had developed with all their might.

The rampant plasma light blooms differently due to the different nuclei of the atoms, the copper ions are blue, the iron ions are yellow, and the manganese ions are pink, where they re-cool and condense, forming a large black haze.

This planet chase will continue for at least four hundred years, and either humanity will win completely, or the two planets will collide and completely fail, with no other results.

"Do you want to succeed or fail?"

Seeing this scene, everyone was silent, even the original indignant boy, looking at the planet full of colorful lights, speechless.

Some people think of running away halfway, fleeing the place, and abandoning the whole plan.

But they didn't dare to say it. Those glorious ionic flames seemed to set the entire civilization on fire. Whoever dares to say that he has run away is a sinner of history and a sinner of civilization.

The greatest cause?

Who knows......

Who can define what is called greatness?

Is it great to do your own work with trepidation all your life and be a screw of society?

No one was able to answer.

……