"Six years, nine months, seventeen days." Xiang Qian repeated, and then looked at Old Man Li.

"Sure enough, the time is different. Half an hour of our time is equivalent to more than six years in the outside world. Gravity distorts space-time, and the flow of time becomes different from the outside world, so based on this actual 3 experience, I have affirmed the correctness of the general theory of relativity. Old man Li said excitedly.

But if you count it this way, isn't light meaningless? Even if the Earth does not fly with light, it will only take about seven years to get here, and with light flight, it will take six years and nine months to get here. This doesn't mean less time, but the real sailing time doesn't cut that much. "Xiang Qian is not a real scientist, and his consideration is different from that of Old Man Li, so he is not only not so excited now, but also a little disappointed.

If the earth often conducts light-navigation in this way, then the time will be reduced by a lot, and this time can be used for scientific research and production, and as a result, once the light-navigation is carried out, all the time is wasted.

"No, it can't be counted like this, if we can completely decipher the relationship between gravity and space-time, then we can control this distortion of space-time, and at that time the earth will need as much time as it wants. We can think of 10 minutes as 10 years, or we can shorten 10 minutes to 10 minutes. Old man Li said even more excited.

Xiang Qian looked at the fanatical old man Li and was very speechless, he wanted to say that the idea is beautiful, but the reality is cruel. Now don't talk about controlling the distortion of time and space. Let's become a fourth-level civilization first.

"Starry sky, inform Zhang Lei that they return to Earth, and then start upgrading the Moon Fortress." Xiang Qian didn't care about Old Man Li. Said to the starry sky.

"Okay, boss."

"By the way, when Zhang Lei comes back, let him come to my office." When Xiang Qian got up and was about to leave the command hall, he suddenly thought.

Five hours later, the Moon Fortress entered Earth orbit and began to revolve around the Earth.

20,000 people inside the Lunar Fortress left the Lunar Fortress. went home separately, and Zhang Lei also came to Xiang Qian's office at this time.

"Brother Lei, it's hard work." Xiang Qian saw Zhang Lei come in. He stood up and said as soon as he could.

"It's okay, it's just that the pressure is relatively high." Zhang Lei's face also showed a smile.

Xiang Qian understands the pressure Zhang Lei said very well, no matter how strong the Moon Fortress is, it is just a product of the peak technology of the third-level civilization. And any civilization in the universe. Even if the technological strength is not as good as that of humans. But their racial flagship is still very strong.

In particular, the weapons of the temple of civilized races are still very lethal to the moon fortress. After all, there is only one moon fortress, unlike the space around the earth that is full of defensive weapons, and when attacking, it is impossible to absolutely suppress the racial flagships of other civilizations. Fortunately, except for the Heiyu civilization, Zhang Lei never used the Moon Fortress to fight other civilizations alone, and they all kidnapped the population of other civilizations to obtain scientific and technological information.

"Don't worry, we've arrived in the Big Magellanic system. This will not be the case. At that time, you don't need to fight a war of attrition, just hold on to one place. And this is a breakthrough in human material science and technology. In terms of performance, the Moon Fortress will definitely multiply several times. ”

"So what is our mission after reaching the Great Magellanic system?"

"Don't worry about this first, when you arrive in the Big Magellanic Galaxy, in Gaoyou, I won't talk about this today. You go back and rest first, come to my house for dinner in the evening, and I will call Brother Yang and Brother Li in the evening, and everyone will gather together. Xiang Qian shook his head and didn't say.

"Okay, then I'll go back first." Zhang Lei didn't continue to ask, and got up and left directly.

In the evening, Xiang Qian's dining room was opened, and the group of people who followed him when he was on Earth came. Now these people are all middle and high-ranking members of the federal army, so during the meal, many people joked, saying that who would have thought that the people who went down to the river to fish together at that time are now generals.

After eating a meal, except for the accident at the beginning, everyone couldn't let go, and later, driven by Xiang Gan, they all drank high. At that time, I forgot my current identity, and there was no leader who did not lead, so I started pouring it directly.

As a result, in the end, except for Xiang Qian and Condensation, everyone drank down. It's not that Xiang Qian drank a lot of alcohol, and it wasn't that he didn't drink, but that he had taken a special hangover medicine made by Condensation before eating.

So Xiang Qian looked at a table of people who wanted to pour him, all of them fell, he didn't want to be too happy.

"You did it on purpose." Condensation saw the smug smile on Xiang Gan's face, and said disdainfully.

"No, it's because they can't drink." Xiang Qian shook his head.

"Then I'll tell them about the special hangover medicine tomorrow."

"Don't, you're my wife, you can't look at outsiders."

"Go...... Who's your wife......"

Xiang Qian looked at Condensation and ran away with a red face, smiled proudly, and said to the starry sky: "Let the biological weapon send them all home." ”

"Okay, boss."

Over the next year, most of the scientists across the planet, except for those who study scientific theories, were involved in the upgrading of the lunar fortress.

Due to material upgrades, all of the energy buffering equipment and wiring in the lunar fortress have been replaced. In the past, large-scale energy could easily break through the electronic core of the line and equipment, but now with the fourth-level material, it is all solved.

The line is easy to break due to the large-scale energy impact of the explosion, and now it is replaced by a natural electromagnetic bondage line, which is made of synthetic natural insulating metal material, and will never be broken down by the current. Inside the line is the pipe force field formed by electromagnetic force, and the current is transmitted by the electromagnetic field, which is safe and stable, and the instantaneous energy output has increased dozens of times.

The supporting skeleton inside the Lunar Fortress has been replaced with the strongest material, so that the volume of the Lunar Fortress can be reduced again. The outer armor on the surface has been replaced with a strong alloy with energy-insulating properties, which is based on Eternal Blue Gold. Although it does not have 100% energy isolation like Eternal Blue Gold, 20% energy isolation is already very powerful.

Due to the increase in the strength of the material, the increase in the instantaneous output power of energy, and the improvement of the bearing capacity of energy buffering equipment, the design of the fortress cannon was put on the agenda. Compared with the main guns of hundreds of meters of caliber, fortress guns of at least 500 meters caliber have high requirements for materials and instantaneous energy output.

With the efforts of the entire earth scientist, five months later, the fortress cannon was created.

The caliber of the entire fortress cannon reached 63o meters, and it was powered by three controllable nuclear fusion reactors alone, which was equivalent to the concentrated fire attack of hundreds of main guns. After all, even when hundreds of main guns are attacking, the firepower is scattered, but the firepower of the fortress guns is compressed.

One year and four months, the renovation of the lunar fortress was finally completed.

The volume of the transformed Moon Fortress has been reduced again, but the current Moon Fortress can be said to be a quasi-fourth-level technology, except that the technical level cannot beat the fourth-level civilization, and all the materials used have reached the level of fourth-level civilization technology.

It's time to head to the Big Magellanic system, after all, it's time to prepare.

"In the starry sky, the gravitational generator is activated, with 80 percent power, and it is closed after half an hour of operation, allowing the earth to rush into the door of space by inertia."

"Okay, boss."

Following Xiang Gan's order, the earth slowly moved, heading towards the spatial gate that emitted silver-white light.

"Brother Lei, follow me." After Xiang Qian saw that it was normal, he said to Zhang Lei.

"Yes." Zhang Lei nodded, he knew that Xiang Qian was going to explain things to him.

The two came to Xiang Gan's office, and after sitting down, Xiang Qian said: "Brother Lei, after arriving at the Big Magellan system, your task is not to rob scientific and technological materials, but to defend a place, and then build it into a fortress, so as not to let any civilization approach." ”

"I see, no civilization wants to occupy it unless I die." Zhang Lei said sternly.

"That place is not as simple as you think, and I don't ask you to hold it, it is destined to be unkept. What I hope is that within ten years, no civilization will be allowed to come near there. In other words, you are there to show forces that other civilizations are afraid of, and other civilizations can take a detour. Xiang Qian shook his head and said.

"Ten years? That's absolutely fine. Zhang Lei said confidently.

Xiang Qian looked at Zhang Lei's confident expression, he really didn't know what to say, so he could only say to the starry sky: "Starry sky, show an image of a binary star system." ”

Soon, a three-dimensional image appeared in Xiang Qian's office, showing a black hole, surrounded by two planets, and the two planets revolved around the black hole.

"Brother Lei, the place you are going to is similar to this place, a planet with a binary star system. When I say ten years, I mean time on a binary star system. There is a strong gravitational pull, and the ten years that are there are almost equivalent to decades or even hundreds of years in the outside world. Under the strong gravitational pull of a black hole, the flow of time is different.

So there, your unfolding is very slow, and in such a situation, ten years is not so easy to keep. It's possible that you've just finished one battle and you're going to have another one soon, after all, it's not just human patent to rob while it's hot. Xiang Qian said slowly.

"Yes, I'll do my best." Zhang Lei's face finally changed, and he didn't say anything more about making a decision.

"If you really can't hold it, evacuate in the Blue Moon, you are the most important thing." Xiang Qian said.

"Well, then I'll go back and prepare."

"Go ahead."

An hour later, the Earth slowly entered the door of space. (To be continued!)

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