It's reasonable for me to have a two-way foil for a second-level civilization, right?

This is the work of division.

As for smelting... that's even simpler.

Reduce the scope of the gravitational cage, use the gravitational cage as a smelting furnace, and directly heat it with the help of beams of high-energy lasers.

The heat transfer effect in space is extremely poor, and there are no unnecessary impurities. This is simply a perfect place for ore smelting!

All of a sudden, clusters of red-hot molten iron appeared in the empty and cold space!

After the smelting was completed, the [Gaotie] material storage ship waiting on the side quickly followed up, took the molten iron into the "belly", and began cooling and shaping work in a high-purity vacuum environment.

Looking at the continuously increasing string of data on the holographic projection, Tang Hairong glanced at Wang Man again.

"I said, Old Wang, it won't stop me from using basic metal resources now, right?"

"Don't block it, don't block it!" Wang Man's face was full of smiles, "Yes! They are all open to use!"

Chapter 676 Restarting the Planetary Fortress Construction Project

【Earth number】.

"Professor, the planet mining project has been successfully completed."

Electronic synthesis sounds sounded in the laboratory, interrupting Lu Yongchang's immersion in writing.

"Is it finished..." Lu Yongchang raised his head and glanced at the holographic clock on the wall, with a little confusion in his eyes, "The speed is quite fast."

"Where's Kepler-452c? Has it been blown up?"

"Yes, there are only five planets left in the Kepler 452 star system." Zero responded quickly, and at the same time released the Kepler 452c explosion scene on the holographic projection.

"How is the working status of the gravity compensation ship?" Lu Yongchang asked Zero as he walked towards the porthole next to him.

As a member of the star system, the sudden disappearance of Kepler 452c is bound to have a certain impact on the movement of other celestial bodies in the star system.

At that time, Kepler 452b may encounter a lot of "trouble" in the place where human beings live.

For the current human civilization, it is almost impossible to completely eliminate this influence.

However, it is possible for human civilization to reduce this negative impact as much as possible.

The gravitational compensation ship was made for this purpose.

With the help of several large gravitational field generators, it can generate a gravitational field with a strength similar to that of Kepler 452c.

As long as it replaces Kepler 452c and continues to operate on the original planetary orbit, it can weaken or even eliminate most of the negative effects caused by gravitational disturbances.

"The operation is in good condition." Zero's response came from behind, "At present, no abnormal celestial bodies have been detected in the star system."

Lu Yongchang nodded lightly, put his hands on the sill of the porthole, and turned his gaze to the original location of Kepler 452c.

In the dark universe, there are sporadic red and purple lights shining.

It was the light of molten iron and high-energy lasers mixed with each other.

This is the final statement to the universe from a planet that has existed for billions of years.

Just as Lu Yongchang was staring at the flickering lights in a daze, the electronic synthesizer sounded again.

"Professor, academician Wang Man sent a communication request, is it connected?"

Lu Yongchang came back to his senses, glanced at the holographic projection behind him, nodded and said: "Help me get through."

In the next second, a big face full of wrinkles appeared in front of his eyes.

Looking at this big face full of joy, the corners of Lu Yongchang's mouth rose slightly, and his mood improved a little unconsciously.

"It seems that Academician Wang is very happy."

"Hey! Professor Lu, what are you talking about?" The smile on Wang Man's face became more and more intense, "Professor, a great harvest!"

"Kepler 452c directly fills in the vacancy of the basic metal of the fleet, not to mention the current circular living station, even another megastructure project will be fine!"

Lu Yongchang looked at Wang Man with a bright smile on his face with great interest: "Is this true?"

Hearing this, Wang Man only felt his heart skip a beat.

Before the smile on his face dissipated, Lu Yongchang said, "It just so happens that I have a megastructure project here."

"In two days, I will ask Academician Tang Hairong to prepare."

"Cough...Professor..." Wang Man showed a slightly embarrassed smile on his face, and asked in a low voice, "May I ask, what type of megastructure project is it?"

"Of course." Lu Yongchang said lightly, "It's something we made before."

"Planet Fortress, do you have an impression?"

"thump!"

Wang Man slumped back to his seat.

Planetary Fortress!

It is no exaggeration to say that the sum of all the projects under construction of the People's Federation can't compare to the resource consumption of that thing!

This, isn't this killing him!

At this moment, the smile on his face has completely disappeared.

"What's the matter, Academician Wang?" Lu Yongchang looked at Wang Man in front of him with a smile, and said in a teasing tone, "You were not like this just now."

Wang Man swallowed hard, raised his hand to gently wipe the cold sweat on his forehead, and said with a wry smile, "Professor, I just said that casually, so please stop making fun of me, professor."

Lu Yongchang looked at Wang Man in the holographic projection with a half-smile.

After a moment of silence, he said softly, "Who said I was joking?"

"After the starship replacement project is completed, the construction task of the planetary fortress will be put on the agenda."

"It can be seen from the last war with the Bosa civilization that although the planetary fortress consumes a lot of resources, its effect in an interstellar war is definitely not comparable to that of one or a few starships."

"Before, due to technical problems, the planetary fortress was only a semi-finished product."

"This time I want to build a real planetary fortress."

"At least, it has to move!"

"Hiss!!!" Wang Man gasped when he heard this.

He silently calculated an extremely rough account in his heart.

In order to achieve the goal mentioned by Professor Lu, no matter how you say it, you have to add a power system to the planet.

This requires hollowing out the interior of the planet.

Just hollowing out is definitely not enough, no matter what, you have to install various fixing and supporting devices inside, otherwise, wouldn't this planetary fortress become a hollow stone shell?

At that time, it will be a big joke if it breaks at the touch of a finger on the battlefield!

Coupled with weapon systems, defense systems...

After finishing the calculation, Wang Man looked at Lu Yongchang with ashen face: "Professor, we...we don't have so many resources!"

"If you don't have resources, just mine on the spot!" Lu Yongchang looked at Wang Man in surprise, "You don't use such an easy-to-use resource mining method, so let's just watch it?"

"No, that's not the problem..." Wang Man's expression became more bitter, "In our solar system, apart from Kepler 452b, there is only one rocky planet left!"

"According to the detection report, the mineral resources on this rocky planet are not rich. If we really want to mine it, it may be a loss-making business."

Lu Yongchang was even more surprised when he heard this.

"Who said it's in our star system?"

"Ah?" Wang Man was taken aback for a moment, with a bit of confusion on his face.

"The curvature detector sent some time ago has successfully sent back the detection report." Lu Yongchang smiled and transmitted a file to Wang Man on the opposite side of the camera, "According to the detection report, in the star system 6.71 light-years away from us , has three iron planets, two rocky planets, and is quite rich in metal mineral resources."

"In addition, the probe did not find any traces of alien civilization."

Wang Man suddenly realized.

"Professor, what do you mean, send a fleet to mine in the surrounding star systems?"

Chapter 677 [Star Devourer]

"Yes, but not quite right."

After pondering for a moment, Lu Yongchang said: "Kepler 452 is the current base of human civilization and the base of future development. The main fleet cannot leave too far away."

"In addition to the [Suzaku] star destroyer, I can only send you some [Glutton] material transport ships. The number is about a hundred."

"Of course, in order to ensure the safety of the mining fleet, I can also provide you with an escort fleet consisting of [Golden Crow] battleships and [Xuanwu] frigates."

Wang Man made some calculations in his mind, and a look of embarrassment suddenly appeared on his face.

"Professor, are these one hundred starships too few..."

"The strength of the gravitational cage produced by this is too weak, maybe there will be some..."

Lu Yongchang fell into deep thought again.

"Da da da……"

His knuckles tapped lightly on the window sill beside him, making a rhythmic sound.

"Using war-type starships to mine resources is an emergency approach." Lu Yongchang frowned slightly, "This is not a long-term solution."

"I suggest you go to Academician Tang Hairong."

"Redesign and build a megastructure dedicated to mining and smelting."

Wang Man nodded thoughtfully.

"Okay, I see."

……

after one day.

A small shuttle draws a smooth arc, crosses the huge balls of scorching hot molten iron in space, and heads towards the direction of Kepler 452b.

In the shuttle, two academicians Wang Man and Tang Hairong sat.

"Old Wang, is what you said yesterday true?!" Tang Hairong, who was sitting on the seat of the shuttle, carefully asked Wang Man beside him.

"Professor Lu really decided to restart the planetary fortress construction project?"

After setting the route, Wang Man turned his head and gave Tang Hairong an angry look: "I say you!"

"Tell me yourself, how many times have you asked this stupid question?"

"If there is no one hundred, there will be fifty times, right?"

Tang Hairong scratched his head with a smirk, and said embarrassingly, "I'm not worried..."

"Okay, okay, the planetary fortress can't escape, it will definitely fall on you." Wang Man waved his hand and said, "The most important thing now is the mining machinery!"

Seeing that Tang Hairong was still smiling like before, Wang Man pondered for a moment, and emphasized again: "You should think clearly, if the mining machinery is not strong enough, your planetary fortress will never be built!"

"Where can I get you so many resources?"

As soon as the voice fell, the smile on Tang Hairong's face disappeared instantly.

"Cough cough!"

He cleared his throat, and his expression became a bit serious: "I said, Lao Wang, you have found the right person for this matter!"

"When I saw the mining plan two days ago, I wanted to say, there is no reason to let war-type starships mine."

"This, isn't this pure waste!"

"Professor Lu is right!"

"It's time to build a big guy dedicated to mining!"

While talking, Tang Hairong became excited again: "At that time, we will send a mining machine to every surrounding star system."

"Good guy, are our resources still exhausted?"

Looking at Tang Hairong immersed in fantasy, the corners of Wang Man's mouth twitched slightly.

……

Small shuttles are fast.

During the chat, the shuttle came to a medium-sized command ship transformed from an engineering ship.

This is the command center of the megastructure project and the office of Academician Tang Hairong.