In October of the fifth year of Yanhuang, Li Hao stood on the ultimate defense system they had arranged.

The Royal Academy of Sciences learned from the Yuanji Civilization Fireball that he happened to be patrolling the neighborhood again.

The Yuanji civilization is very far away from here, and they have to confirm the death of the big fireball through special means.

There is also the transfer of troops to attack the Yanhuang Empire, which will take at least three to five years.

This gave them a chance to breathe and find a way to deal with the Yuanji civilization.

The action of the Yuanji civilization has been very fast in interstellar warfare. Interstellar wars are usually measured in hundred years.

There are wars between civilizations that are not much different. It is possible to play thousands of years.

The defense project in front of Li Hao, this is an invincible defense project specially built to deal with the Yuanji civilization. He can block almost all the means of the Yuanji Civilization from the memory of the Great Fireball of the Yuanji Civilization.

Fighting head-on, they can't compete with the Yuanji civilization, it's completely an egg hitting a stone. There is no certainty of victory at all.

However, the Yanhuang Empire adopted the means of shrinking and constantly developed its own technology. With their speed of research and development, which is different from that of the Yuanji civilization.

Li Hao believed that they would be able to drag the Yuanji Civilization to death sooner or later, and there was hope to counterattack the Yuanji Civilization.

After several years of building, they finally analyzed the information of the Yuanji civilization. Make great defensive works.

Li Hao looked at Sun Kai, who was leading the project, only a few years had passed, and his hair had already turned gray. He received a report that Sun Kai was now so tired that he coughed up blood.

"You have worked hard, and with this defense system, we can survive in peace." Li Hao said with emotion.

With tears in his eyes, Sun Kai said: "It is not us who need to be thanked, but great engineers and scientists.

In order to complete this project before the arrival of the Yuanji Civilization Fleet. We really did our best, scientists and engineers worked hard to get these projects done.

In order to build this project, 1,252 engineers sacrificed. Engineers lost 183,400 people. Scientists of the Royal Academy of Sciences sacrificed five people. ”

"The death of so many people, no, is a sacrifice. They can indeed bear the word sacrifice. Let the key personnel enter the Martyrs' Shrine, they have this qualification. Li Hao said with emotion.

He had been working on their strategic weapons all this time, and was only concerned about their progress in defense works.

In terms of interstellar engineering, their defense project can be a sweat project. Every light-year project has the blood of human elites.

It can be expected that after fighting with the Yuanji civilization in the future, every kilometer of space here will leave the blood of human soldiers. Maybe there will be their blood too.

The Yan and Huang Empire's determination of sacrifice is very important. Fallen heroes can be buried under the national flag.

They were the only ones who used this method except for the Emperor. This is the exclusive honor of the martyrs.

Their parents and wives are supported by the state, and the maintenance standards of cabinet executives are applied.

Their children are raised by the state for three generations, using the highest level of elite education.

Their children have priority in any work.

The Yanhuang Empire has a class, and they are the most high-end class.

Li Hao didn't want to spend a lot of money to raise a group of royal and aristocratic children, and these gentlemen did not contribute anything except wasting resources.

Elite talents will naturally get more than others, and their status is special and does not require special care. But he was very willing to support the sons of heroes.

This is one of his basic plates, and it must not chill them. If a country's heroes are cold, then who else will go to work.

Li Hao looked at the huge defense project, and he said leisurely: "These people are all heroes of our human race, and their sacrifice is to make our lives better." Our best reward is for keeping our people safe.

There are no eggs under the nest, and we have seen the miserable life of the wandering civilization over the years. Interstellar warfare can't be lost.

If you fail, you will flee some of the people. The chances of them rising are too low. ”

"That's it, I used to want to run, but now I can see it completely. Where is my hometown, people are happy. ”

Sun Kai asked, "Your Majesty, what is the name of our defense system?"

Li Hao thought for two seconds and said coldly: "Let's call it the Great Wall." It is built in space, which is called the Great Wall of space. It is the Great Wall of our Yanhuang Empire.

It is important to remember that the Great Wall was a fortress for attack in ancient times. Not a shrunken fortress.

I hope it can be like the Great Wall, holding off incoming enemies. Even if we cowered inside the Great Wall.

To provide power and fire for later counteroffensives. ”

After Li Hao finished speaking, he looked at their panorama of the Great Wall of Space again.

This huge defensive project is very simple to say.

It is a moat that digs through space and digs thousands of light-years long and fifty light-years wide.

Inside the moat is a completely endless nothingness, it has no particles and no energy. It also does not transmit particles and energy, and is immune to almost all means of attack.

The shape of the Great Wall resembles a soup spoon placed in water.

The head of the spoon is where they are, and the water around them is an endless void.

The outside space is connected to the inner space by the handle of the spoon.

The easiest way is for all the regions of the Yanhuang Empire to form an island, completely isolated from the outside world. So that no civilization can affect them.

But after technical verification, this method is completely infeasible, the gravitational force of space is involuted, and they are like dumpling filling, which is wrapped in dumplings.

The way scientists have come up with this is to make them have a certain connection to the outside world.

It's just like the Rift Ring, where the space is not completely disconnected, but part of it is connected to the outside space.

It's like an involuted iron sheet stretched out, if you don't use any measures. The tin sheet will still roll in, but if you nail its edges to the frame, the problem will be completely solved.

The nail they chose was a natural giant black hole, a giant black hole that the Yuanji civilization could not deal with.

But it is also very dangerous to approach such a black hole, and most of the people sacrificed are sacrificed to explore the black hole.

The reason why they completed the construction of the Great Wall of Space in a short period of time. It was because the Royal Academy of Sciences developed weapons that could quickly cut through space.

But giant black holes are too large to be carefully probed for space data.

If the calculation is not good, either it can't stop the attack of the Yuanji civilization, or it touches the giant black hole. Destroy the Great Wall of Space.

The Yanhuang Empire paid a huge sacrifice in exchange for the completion of the Great Wall of Space.

Li Hao looked at the Void Belt with a width of fifty light years, which was the most important means of protection for the Great Wall of Space.

There is nothing in the void of space, and there is no basic energy and no particles. Even if there are many tricks of the Yuanji civilization, they can't cross the void belt.