Liu Gan is preparing to use these three or five hundred years to build the entire solar system into a war fortress.√

As long as the conditions are appropriate, all nine planets and their satellites will be built into orbital defense systems, install thousands of turrets, and install large-scale long-range energy cannons. The effective range must at least cover the entire solar system.

When Liu Gan was fighting against the Three-Body Civilization, he unexpectedly showed the power of machine gun bullets. Most of the warships of the Three-Body Civilization were exploded by the machine guns of the Galaxy Fleet. Originally, he was considering personally strengthening billions of bullets to make the warheads stronger and penetrating more powerful to enhance the attack power of the Galaxy Fleet.

But at the suggestion of scientists, Liu Gan gave up this idea.

In front of the five-car five-civilized space fleet with energy armor, traditional bullets have lost their meaning of existence. Energy armor has the characteristics of non-Newtonian fluids. The greater the force of high-attack bullets, the greater the rebound force, which basically does not cause effective damage to them.

Only laser weapons can effectively break the energy armor of the five vehicles and five civilizations.

Therefore, the focus of research on weapon technology must be shifted to laser weapons and energy weapons. The Three-Body Civilization has given the Earth Civilization about 10% improvement in this regard. If you want to continue to improve, the Earth Civilization must rely on its own wisdom.

"I want to build a large particle collider around the Mars base." The project team of physicist Liu Long applied to Liu Gan.

"What's the use of building this thing?" Liu Gan frowned.

"Only by improving our basic physics theory, other technologies have the opportunity to make further rapid progress. In detail, it is..." Liu Long, facing Liu Gan, a leader with a mess of physics, was really difficult to popularize those profound theoretical knowledge.

"It's very important to Zhan Technology, right?" Liu Gan's virtual projection waved his hand to Liu Long, stopping him from continuing to talk about theories that he couldn't understand.

"Yes, this thing must be established. Decades ago, our country wanted to build a large particle collider, but it was blocked by some people with ulterior motives and it has not been completed." Liu Long looked very expectant.

"Okay, how many resources are needed? Manpower? How long will it take to build it?" Liu Gan only cares about this matter now.

"If all the resources in the Mars base are needed, all the staff are needed. If it is short, it will take about two or three decades, and if it is long, it may take four or fifty years." Liu Long made a preliminary estimate.

"What? What do you mean, in these two or three decades, the entire Mars base does nothing, just build the collider you mentioned?" Liu Gan shook his head. Time is too precious to him now, let alone forty or fifty years, twenty or thirty years, and it is unacceptable for him.

"But... without this thing, our basic physics cannot move forward any further. Without the advancement of basic physics, everything else is empty talk." Liu Long said in a very persistent tone.

After visiting Chen Jinghang, Chen Ce and other major figures in various industries that Liu Gan thought were very powerful, Liu Gan confirmed that what Liu Long said was true. Now the technology of the entire earth civilization has reached a bottleneck, and a planetary particle collider is necessary to obtain a breakthrough.

In the end, Liu Gan had to agree to Liu Long's request and began to build a particle collider of satellite orbital level orbit around the entire Mars. The materials, manpower and material resources required for this thing have almost reached the limit that the Earth's civilization can support, which forced Liu Gan to stop all other things.

Fortunately, Liu Gan himself didn't have to stay idle all the time. In the past few decades of building a planetary particle collider, he used his own energy and mysterious energy to strengthen more than 10 million tons of alloy materials, enough to produce two or three spirit-class space warships.

One day thirty-six years later, the construction of the particle collider orbiting Mars satellite was completed. Liu Long's project team started various experiments day and night, and three years later, successfully advanced the basic physics a big step forward. With the improvement of basic physics, materials science, dynamics and other disciplines, it made rapid progress in the next ten years, and finally promoted the entire earth civilization from the early stage of the first stage to the mid-stage level.

Three million-ton spiritual-class space warships were produced, and the energy cannon technology obtained from the Three-Body Civilization was successfully miniaturized and installed on the three spiritual-class space warships.

Compared with the ships of the current Galaxy Fleet, the ships of the Five Vehicles and Five Civilizations are still one level away, and they cannot produce king-level space warships. Compared with the Spirit-level space warships, they should have the power to fight.

Although the battleships of the Five Cars and Five Civilizations have energy armor, the Galactic Fleet's spiritual-class space warships, planetary orbit defense systems, and a large number of energy turrets installed inside the solar system, the energy cannons fired can effectively destroy the energy armor of the Five Cars and Five Civilizations warships.

The Galaxy Fleet is equivalent to the ships made by the material technology in the middle of the second stage of civilization. In terms of defense capabilities, it is no less than the ships of the Five Vehicles and Five Civilizations protected by energy armor. The Five Vehicles and Five Civilizations will definitely not have thought of this, and they can win against their surprise weapons at that time.

According to the detection of the shuttle-shaped detection ship, after the fleet of five vehicles and five civilizations left, they have been advancing towards the direction of the solar system. In the past fifty years, the fleet has already crossed a close journey. If nothing unexpected happens, they will enter the solar system in about three hundred and fifty years.

Although the material technology of the earth civilization is powerful, it all depends on Liu Gan's energy enhancement technology. According to the current progress, in three hundred and fifty years, Liu Gan will only strengthen more than 20 spiritual-class space warships, and the number of ships in the fleet of the five-car and five civilizations has reached hundreds of thousands.

After so many years of exploration, Liu Gan almost knew the composition of the five-car and five civilization fleet: a king-class warship is their flagship, and there are more than 50 spirit-class warships, thousands of master-class warships, tens of thousands of division-class warships and hundreds of thousands of general-class warships.

If a ship is built using materials that have not been strengthened by Liugan's mysterious energy, these ordinary ships will be as fragile as paper in front of the five vehicles and five civilizations with energy armor.

Therefore, how to improve the Galaxy Fleet from quantity and quality to the same magnitude as the Five Vehicles and Five Civilization Fleet within 350 years is a very important and unavoidable problem facing Liu Gan and all earth scientists.

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