Start by building a Star Destroyer

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As for the weapons, there are manufacturing drawings of the Star Destroyer, which can be replaced, which can be said to be handy.

What really troubled him was the most important levitation device in [Sky City].

To be honest, it's not like he hasn't studied the suspension device before.

As early as when he first came into contact with the drawings of the Star Destroyer.

He has built an anti-gravity levitation cannon.

And with that thing, I have faced many enemies.

Even in the Guanglin Town defense line battle before, he took out that thing to fight against the enemy, and won a lot of victories.

But let's be honest.

The anti-gravity levitation cannon, as well as the technology used by Xie Xie.

It is not on the same level as the anti-gravity levitation technology currently used in [Sky City].

How to say the gap between the two?

Like an engine.

Even if it's a petrol engine.

But one is a 10,000+ gasoline engine.

The other is the millions of McLaren or Lamborghini gasoline engines.

The research costs behind the two, as well as the painstaking efforts expended, are not on the same level.

The anti-gravity technology used in the evil-killing combat satellite.

You just need to help him lift from the ground to the low-Earth orbit.

But the anti-gravity technology used in [Sky City] doesn't just stop there.

Strictly speaking, the entire anti-gravity technology can be said to be the real core of the city [Sky City].

Not only does it need it to help the city, but it is suspended in mid-air 24 hours a day.

What's more, it is necessary to keep it moving at a high speed and have a certain degree of mobility in times of crisis.

This has led to the fact that the research needs of the two for anti-gravity technology are not at the same level.

So when the construction robot started to build a new [Sky City] in full swing.

On Lu Yan's side, he had to devote himself to the in-depth study of anti-gravity technology.

Learning this kind of thing is always painful and happy.

……

Fortunately, on Lu Yan's side, not long after completing the epic task, he got a lot of time to be a master.

But even so.

The system rewards 600 master time.

It was also spent more than 500 by Lu Yan's side.

It was barely completed, the initial mastery of this technology.

The extension of any technology is a vast amount of knowledge.

Anti-gravity technology is no exception.

Even Lu Yan himself did not expect that the research on this technology would eventually involve knowledge about gravitational waves.

So in this study.

Lu Yan was inexplicable, and opened up a new research direction for human beings.

That is the study of the gravitational field!

Prior to this, the research on the gravitational field has been in the theoretical stage.

It wasn't that long ago that such things as gravitational waves existed.

Now, after Lu Yan's fuss, gravitational waves have shifted from theory to the initial stage of practice, and have been directly promoted to practical application.

Among them, the speed of improvement is so fast that it is no exaggeration to say that it has directly passed a hundred years.

If it spreads out, I'm afraid you can close your eyes and easily win another Nobel Prize.

……

Of course, in Lu Yan's current capacity.

He is not very interested in the so-called Nobel Prize.

This time, after the success of the research, it was not announced to the public as soon as possible.

Instead, they worked hard, seized all the time, and began to manufacture the propulsion device for anti-gravity on the [City in the Sky].

After the time of more than 500 academic masters ran out.

Lu Yan locked himself in the room, and closed it for nearly half a month.

Then it finally came out.

And wait until he leaves the customs.

There are several disc-shaped objects the size of a millstone behind him.

After taking this thing out.

Lu Yan immediately gave orders.

Install this thing under the entire city.

"Minister, what exactly is this thing? Could it really be the thrusters for the entire [Sky City]?"

Seeing Lu Yan take out such a weird thing.

The rest of the Tianbu, Taoyao and the others were naturally curious too.

Can't help but ask aloud.

Hearing their questions, Lu Yan laughed again.

He didn't deny it, but nodded frankly and said, "Of course it is, otherwise what do you think it would be?"

"What, is it really a thruster? But this thruster, why does it breathe fire??"

Everyone was shocked when they heard this.

Zhang Hu scratched his head from behind and asked more incomprehensibly.

And heard him ask such a question.

The people next to him were all upset and rolled their eyes.

Tao Yao was even more furious, said. "Stupid, who told you that the propeller must breathe fire?"

"If you don't breathe fire, how can you lift into the air?"

"Have you forgotten, the combat satellite that the minister launched before? When it took off, was there flame under its feet?" Tao Yao asked back.

Zhang Hu suddenly realized.

Turning to look at Lu Yan, he also became excited.

"Minister, are these two things the same?"

Lu Yan said, "It's almost the same principle. But the internal structure is different.

It's a little troublesome to say this kind of thing in detail.

Anyway, you just have to watch it when the time comes, I see that the city is almost built.If you ask me, it's time to lift it up, too. "

Lu Yan's retreat took place for more than two months, nearly three months...

By the time he exits the level again, the construction robot has already finished building the main structure of the entire city.

So right now, after he has installed the propulsion device.

Indeed, the conditions for preliminary ascension to the [Sky City] have been met.

But when he heard him say that, the people next to him followed, and they were surprised again.

Out of caution.

Mr. Zhao was beside him, and hurriedly said, "This has just been installed, don't you need to test it?"

"Yes, Minister. It's not a trivial matter to lift a whole city into the sky, or let's check it first. Don't make any trouble after we get to the sky, that would be really bad.

Although the city is built extremely strong, if it is really dropped from the sky.

I'm afraid it will be damaged too. "

Zhang Hu also reminded from the side.

As for Taoyao, she pursed her lips again, and couldn't help whispering.

"Do you all only care about the city?

I don't even think about the consequences of this entire city if it is directly smashed down from mid-air.

To me, it is estimated to be no less than a magnitude 13 earthquake.

The entire hinterland of China will be affected. "

What everyone is saying at the moment is from the heart.

But after hearing what they said, Lu Yan smiled confidently.

"Okay, you don't have to worry about it. The things I built have naturally been tested before they are built. There will be absolutely no problems.

You just wait and watch the show when the time comes. "

After finishing speaking, he waved his hand straight away, and then set the lift-off time of [Castle in the Sky] on the second day.

9102, April 9.

All the members of the Tianbu who had gathered around the defense line of Guanglin Town were suddenly ordered to evacuate to a forest location hundreds of miles away from here.

And right now it's on top of the hill.

Taoyao, Zhang Hu and other key members of the Tianbu were nervously looking at the direction of the defense line of Guanglin Town.

Under their nervous gaze.

A huge city covering an area of more than 1000 square kilometers.

Slowly off the ground.

It was actually suspended in mid-air!

Looking at the huge city floating steadily in mid-air like a cloud.

Everyone lost their minds for a moment.

Because there is no huge roar of rocket ejectors.

So at the moment the arena is extremely quiet.

But that's the silence,

The shock in everyone's hearts at this moment began to be infinitely magnified!