On the first day of the sixth month of the 50th year of Kaihong (June 29, 1908 in the Western calendar), the imperial capital Tao Chengdao Air Base - this is also the first air base in China, 20 years ago, when the division of the fluid laboratory of the Imperial University of the Imperial Capital used linen skin and wooden pillars to connect the biplane under the impetus of a gasoline engine, after flying into the sky, although the flight time was only a short 12 seconds, and the flight distance was only an insignificant 176 meters, but it was the first time in human history that it was powered, manned, continuous, The first successful lift-off and flight of a stable and maneuverable heavier-than-air aircraft marked the beginning of the realization of man's dream of conquering the skies. It was also from that day that the dream of flying began to turn from airships to airplanes.

"The Europeans have conquered the seas, and we will conquer the skies and, in the near future, the universe!" Fifteen years ago, when people were still questioning what those toy-like planes made of wooden beams and numb could do, Zhu Yifeng, as the emperor, instructed the establishment of an air force and converted the army floating field near the imperial capital into an air base.

Since that time, the imperial army has appeared after the army, navy and marines after the fourth branch of the military - the air force, although when the air force was first established, the scale of the air force was very small, but there were only more than 1,000 people and less than 50 toy aircraft, but with the support of millions of yuan or tens of millions of dollars in military spending every year, the scale of the air force is expanding, of course, more importantly, the quality of the aircraft has been improved day by day, from the cloth skin and wooden beams to the current aluminum alloy skin, from the weight of only a few hundred kilograms of gadgets, Five years ago, the Air Force organized an aircraft bombing test of a retired combat ship, and the results shocked the military circles all over the world. It can be said that the current Air Force, after 15 years of development, has been recognized by the people. The Tao Chengdao Air Base, named after the Ming Dynasty who tried to fly by rocket, has always been the largest base of the Air Force, it is not only the largest base of the Air Force, but also the world's premier aviation testing organization, and the prototypes of aircraft in the early stages of research and development often appear on this base, where they are tested in all aspects. It is precisely for this reason that when a new type of aircraft appears here, it often does not attract people's attention, after all, there are new models tested here almost every month, after all, there are as many as more than ten airlines in China that receive funding from the Air Force to develop new fighters, bombers, transport planes and other models, and even civilian airliners, are also tested here.

That afternoon, a black "Don 100" car with a special pass drove into the base, and the black car drove into the front of a large hangar with almost no notice, and in the middle of the hangar was a huge plane - it was a large four-engine aircraft, and more noticeablely, it was a monoplane with an all-metal structure.

Feng Ru and the others, who were originally busy, hurriedly left their work at hand and saluted His Majesty as soon as they heard the reminder from the staff.

"See Your Majesty!"

"Excuse me!"

His eyes were staring at this large four-engine aircraft, this was not the first time Zhu Yifeng had seen it, the last time he saw him was five years ago, it was in Feng Ru's aircraft manufacturing company to see its model, and when was the first time I saw him?

It was when I was a teenager, it was another plane, and in another plane, it had a very loud name - "Flying Fortress".

That's right, it's B17, to be precise, it's a bomber built with B17 as a prototype, although as early as twenty years ago, Chinese engineers have designed an airplane, and aluminum alloy was used in bombers fifteen years ago, but since five years ago, "development" of this bomber, there are still many difficulties, the biggest difficulty is the engine, before that, the most powerful engine made in China is nothing more than the 800 horsepower star engine used on airships, It requires a 1,200 hp radial engine. And it's also a single-plane large aircraft.

In the end, after five years, with the support of Zhu Yifeng, Feng Ru still succeeded in manufacturing this bomber named "XH-7", in the past six months, more than 6 have been manufactured for various tests, and unlike the 6 bombers, this "XH-7" was removed bulletproof steel plates, machine guns and other unnecessary equipment, of course, there is a self-sealing fuel tank made of raw rubber, and finally succeeded in reducing its importance, making it fly higher, faster, and of course, more importantly, It was possible to fit the 3.76-meter-long, 1.32-meter-diameter barrel, but even so, a lot of improvements were made to fit the 4,600-kilogram barrel.

Walking in front of this plane with a glittering aluminum alloy metallic luster, Zhu Yifeng's expression looked a little excited, of course, it was more complicated, after today...... I'm going to say goodbye to everything here.

Fifty-six years ago, he was sent to this plane by that thing, and it took him fifty-six years to create what he is today, and in a few days, everything will be over.

In any case, he knew that he had to say goodbye to it all, including his loved ones in this world.

It seems that he did not say goodbye. No, actually, it was goodbye, and in the dormitory, there was a roll of film for his sons, and a letter, a letter that was left only for Fenghai, but that letter was in the laboratory.

"Grandpa Huang, what a big plane!"

Suddenly, the voice next to him made Zhu Yifeng turn his head and look at the young man beside him, he is his great-grandson, he is already twelve years old this year, if everything goes well, he will inherit the throne in a few decades and become the fourth emperor of the Chinese Empire. Fifty-six years ago, he never imagined that his son would marry and have children when he was 16 years old, and become a great-grandfather when he was fifty-four.

"Grandpa Huang, are you flying this plane? Can you fly with me? ”

Zhu Jiyan looked at the Imperial Grandfather with a look of anticipation on his face, he knew what kind of eyes he should use to get what he wanted from the Imperial Grandfather, but this time he was destined to be disappointed.

"Not this time, this time the imperial grandfather is going to a far away place......"

Yes, a far away!

Looking at his great-grandson, who was only half a head shorter than himself, Zhu Yifeng told him again.

"Remember what your great-grandfather said to you?"

"The password is 2016......"

2016, that was the time when Zhu Yifeng came to this era, and it was also the password of the safe door in the laboratory, and the other password was 1908. It's time to get out of here. In that laboratory, there are gifts for children and grandchildren, which are the result of the final negotiations.

"Don't forget it, understand? One day, when the empire is in danger, tell your grandfather the password! ”

Looking at the imperial grandfather, Zhu Jiyan nodded heavily, and then made a guarantee with the military salute of the scouts, for him, there may be nothing more solemn than this.

"Okay, Grandpa Huang is leaving, tell your grandfather about them, I ...... I...... I love them! ”

Suddenly, when he said this, Zhu Yifeng only felt that his eyes were a little sour, and even Zhu Jiyan couldn't understand what happened to the imperial grandfather today and why he spoke like this, but he felt that everything seemed to be different from the past.

Dozens of minutes later, Zhu Jiyan watched the silver plane take off, and he waved his hand at the distant plane and said.

"Goodbye, goodbye!"

The plane did not fly directly to the north, but flew around the sky over the imperial capital several times, Zhu Yifeng, who was piloting the plane, looked at the city on the ground, and the emotions in his heart became more and more complicated, at this time, the cockpit was empty, only himself.

Feeling a little uncertain, he transferred the plane to autopilot, a device invented ten years ago that could only keep the plane flying at level, but allowed the pilot to rest in the air for a while.

Just as he was adjusting his mood, he noticed that time seemed to stand still again, and it appeared.

"Seemingly, you don't want to get out of here!"

"I didn't have a choice, did I?"

Faced with its inquiry, Zhu Yifeng replied truthfully.

"Do I really have no other choice? For example, I can use autopilot ......"

"The autopilot does not guarantee that it will be able to collide with it accurately, if it can't hit accurately, then perhaps, human civilization will come to an end!"

All right!

I don't have any other choice at all, since twenty years ago, after knowing everything, Zhu Yifeng knew that he had no other choice, he had to end it all.

"Are you sure it solves the problem?"

The one in Zhu Yifeng's mouth is the big guy in the cabin behind him - one makes a nuclear weapon based on the B41 nuclear bomb in another time and space. It had a yield of more than 25 million tons at the time of the explosion, and it had been assembled in the underground laboratory of the University of San Francisco two years ago, and its parts were made by more than a dozen universities and hundreds of companies in China, and the San Francisco earthquake destroyed the laboratory where the final assembly was completed two years ago.

However, the materials and most of the equipment in the laboratory had already been transported to the vault of the underground laboratory in Huangcun, where there were not only materials, but also hundreds of kilograms of weapons-grade uranium, and even models, parts and drawings of the atomic bomb, as well as hundreds of tons of technical information. This is an agreement negotiated with it, and what is the price of the agreement? It was the San Francisco earthquake that took away more than just the labs.

"Of course it can solve the problem, I believe that a nuclear explosion of 25 million tons will be enough to destroy it, thus avoiding the destruction of human civilization......"

"Is it really a predator?"

Again, Zhu Yifeng asked, when he started preparing for today's all this twenty years ago, he was thinking about this possibility, and he didn't know if he could trust this guy.

"When Columbus discovered America, the Indians thought he was a friend!"

Although he doubted its intentions, but in the face of its answer, Zhu Yifeng knew that he had no choice, a civilization that could carry out interstellar voyages was extremely dangerous compared to the earth civilization, not to mention the current earth civilization, that is, the earth in another time and space, in the face of such an extraterrestrial civilization, it was just like a primitive man.

"Why are you stopping it?"

This is what Zhu Yifeng has always been curious about, twenty years ago, it had told itself that it also came from an extraterrestrial civilization, but he belonged to a relatively friendly extraterrestrial civilization, and as an intelligent machine, its duty was to discover and observe new civilizations.

“…… We are a peace-loving civilization, for hundreds of millions of years, the planet I come from has been adhering to the principle of not affecting other civilizations to carry out unremitting exploration of the universe, the planet launched an exploration spacecraft on the planet in the universe, the evolution and development of different forms of civilization to collect, and then sent back to the home planet to record and analyze, hoping that one day the mystery of the universe will be revealed. …… Our exploration of various forms of civilization is based on the premise of not affecting its development, but not all civilizations are like this, in the universe, there are also predators, after they find inferior civilizations, they will conquer and plunder them, and it is precisely because of my mistakes that the marauders have discovered your planet, at this stage, after analysis, I think they will have a devastating impact on the earth, after careful assessment, I think it is necessary for me to save the earth's civilization......"

Is that the reason for it?

Did this all start with this?

Zhu Yifeng didn't know, just like he didn't know why it would choose itself in the form of electromagnetic waves on the ball in another time and space, but one thing was for sure, he didn't have any other choice, he didn't even dare to take risks, he didn't dare to risk human civilization, or the empire he had single-handedly created.

The speed of the plane is not fast, in fact, the cruising speed is only 300 kilometers per hour, during which there are still two landings, and then refueling, each landing, although it guarantees that there will be absolutely no problems, but Zhu Yifeng, who is carrying the big guy, will still have some worries, until after completing the second refueling, when flying towards the hinterland of Siberia, in the night, looking at the aurora in the distance, he knows that everything will end in a few hours.

When the sky was slowly turning white, Zhu Yifeng took a deep breath, knowing that it hadn't been long for him, he asked again.

"Are you sure I can go back?"

This is its promise, at the moment of the explosion, he will use the electromagnetic pulse generated by the explosion to reopen time and space, and then send him back to 2016, back to his loved ones.

"At least 75% of the time!"

Just as it gave the answer, suddenly it said again.

"It's coming! Adjust the course ......"

Sure enough, a moment later, Zhu Yifeng saw a huge fireball in the distance across the sky, it was very bright, it seemed to be burning, and it was very large, this may be what it said, the spaceship was passing through the "black barrier area", at this time, it was impossible for the marauder's spaceship to detect him.

"Our aircraft have a ceiling of less than 8,000 meters......"

Just when Zhu Yifeng said this, he felt that the plane seemed to be accelerating, towards the position of the fireball, it seemed that a gust of wind was blowing between heaven and earth, and under the impetus of the wind, the speed of the plane was getting faster and faster, and the altitude of the flight was also increasing.

10,000 meters, 11,000 kilometers, 15,000 kilometers, 20,000 meters......

Finally, when the plane exceeded 25,000 meters, Zhu Yifeng saw a huge aircraft with a size of several kilometers, rushing out of the "black barrier area", and the flames around it were disappearing. Looking at the giant spaceship built by the extraterrestrial civilization, Zhu Yifeng glanced at the family photo next to the pilot's instrument, the corners of his lips grinned slightly, a resolute smile appeared on his face, and he drove the plane towards the spaceship......

Well, this is also the last time to fill in that hole, I found that I really can't write a system article, well, it can be regarded as an explanation and an ending for artificial intelligence! Well, is this the end? Of course not!