“Material…material…”

Lu Yongchang frowned and muttered softly.

Then, he sighed deeply.

Since humans entered the secondary civilization, carbayne has become the main material for manufacturing starship shells.

Research on new materials has never been interrupted.

However, until now, carbayne is still the most powerful substance that humans can produce.

As elements of the same family, silicon and carbon have many similarities.

However, the length of the carbon-carbon bond is shorter than that of the silicon-silicon bond.

This means that even with the so-called siliconety, the material strength cannot exceed that of carbonyne.

Of course, there is not no matter in the universe with higher intensity.

Materials constructed from strong interaction forces.

For example, neutron stars.

Under the action of powerful gravity, even the atoms are completely crushed, and electrons outside the nucleus are pressed into the nucleus and combined with protons to form neutrons.

Therefore, there are no so-called atoms and molecules on neutron stars.

The density and intensity of neutron star matter constructed from neutrons have reached its peak.

Do you think this is over?

Of course not.

Up to now, quark stars that are still in theory and have not been truly discovered.

The stronger gravity even crushed the neutrons and released the quarks.

Macroscopic matter directly constructed by quarks far exceeds neutron star matter in terms of strength and density.

Of course, with the current human technology, we can only be discouraged from this kind of material that looks like a myth.

Not to mention how to completely remove the neutron star matter and keep it in its original state, even getting close to neutron stars is something that the current human civilization cannot do.

Lu Yongchang shook his head helplessly and withdrew his distracting thoughts.

"Professor, Academician Fang Xu sent a communication request."

Zero's electronic synthesizer suddenly rang in the quiet office: "Is it connected?"

Lu Yongchang was probably clear about Fang Xu's purpose.

He pondered for a moment, raised his hand and waved it in the air, "swalking" the layers of holographic images above the desk to the side.

Then, he straightened up and said in a deep voice: "Click on."

The next moment, a brand new holographic picture slowly unfolded above the desk, and the robot next to it also "passed" a camera just right.

"Yongchang, what is the design plan for Starship?"

Sure enough, the moment the communication was connected, words came from the speakers that made Lu Yongchang very confused.

At the same time, Fang Xu's big face appeared in the holographic projection.

As if he had noticed the bitter expression on Lu Yongchang's face, Fang Xu's brows frowned slightly: "Have you decided yet?"

Lu Yongchang nodded silently.

Seeing this, Fang Xu frowned even deeper.

"Why?"

"Even if we can't make flagships of ten thousand meters, asteroids of six thousand meters [Earth] is a good choice, isn't it?"

silence.

After a long time, Lu Yongchang sighed lightly, shook his head and said, "Do you still remember the scale of the comet-level [Earth]?"

Fang Xu hesitated for a moment and replied in a low voice: "Five thousand meters?"

"Yes." Lu Yongchang raised his hand and rubbed his face hard. "If we follow this drawing, what we created would only be an enhanced version of the Comet-class flagship."

"You have also seen the flagship of Lator civilization."

"Although I learned later that it was a starship of the fourth-level civilization."

"But, don't forget!"

"That's not the flagship of the fourth-level civilization!" Lu Yongchang said in a heavy tone, "Once you choose to compromise on the highest combat power of civilization, human civilization will sooner or later suffer in the interstellar war."

"But..." Fang Xu tried to persuade again, "Yongchang, you also know that in the simulation calculation of zero, materials are a hurdle that cannot be avoided."

"We can only settle for the next best."

"As for starships with a scale of 10,000 meters... it is not too late to make plans if the material technology has made breakthroughs."

Lu Yongchang didn't say anything, but just frowned and looked at the hologram that was "thrown" aside.

“Wait a little longer.”

After a moment of silence, Lu Yongchang said softly: "Look for it again."

"Since ordinary starships of the fourth-level civilization can reach this scale, it means that this material is not scarce."

"It's just that we've fallen into a misunderstanding, or we're missing a little bit of luck."

Lu Yongchang's eyes moved slightly and he murmured to himself: "Perhaps we should turn our eyes to a farther place..."

"What?"

Fang Xu obviously didn't hear Lu Yongchang's soft whisper clearly. He raised his tone a little and asked impatiently: "What other misunderstandings can you have?"

"I don't know how many experiments I did in the laboratory, but no matter how I adjusted it, the materials I made could not meet the requirements."

Lu Yongchang in front of the camera ignored Fang Xu's complaints. He suddenly stood up from the chair, stared at the camera handed over by the robot with a serious expression, and said word by word: "Wait a moment!"

"I feel like I'm about to find my direction!"

"Stop all starship manufacturing projects and no asteroid starships shall be built until I speak!"

The picture in the holographic projection seemed to be pressed to pause.

Fang Xu stared at Lu Yongchang in a daze, his face filled with shock and incredible expressions.

"What did you say?!"

"【Jin Crow】,【Taotie】... Do these starship manufacturing projects that have been determined have also stopped?!"

"Yes! Stop!" A confident light flashed in Lu Yongchang's eyes, "Believe me, give me some more time and I will find a way out!"

Fang Xu took a strong breath and stabilized his emotions.

He nodded with difficulty: "Okay."

"Who made you the chief scientist?"

"I will arrange the laboratories and factories."

Lu Yongchang smiled and nodded: "Don't worry, I have a strong premonition."

"After a hundred years, material technology is about to break through!"

Fang Xu shrugged: "I hope so."

...

After the communication was cut off, Lu Yongchang quickly issued an order.

"Zero, close the door."

"No one is allowed to enter!"

"receive."

After hearing Zero's response, Lu Yongchang hurriedly closed his eyes.

He skillfully mobilized his consciousness and came to the science and technology tree space deep in his mind again.

In recent times, he has entered the science and technology tree space countless times and tried to analyze a technology located in the main area of ​​the middle section of the science and technology tree.

[Material Technology: Carbonacene Composite Material]

The words in the cursor are very clear. The material technology that the third-level civilization should master is composite materials built with the help of carbonacene.
Chapter completed!