In the midst of a green mountain, a straight blue-gray line runs through it, ignoring the steep terrain in the mountains and valleys, and after hundreds of millions of years of natural erosion, it is as hard as the old mountain rocks, and only follows its own "willful" direction and a regular angle, and has been passing into the unknown distance. From above, the mountains seem to have been split by some mysterious force, and this light-colored line is the mark left behind.

This blue-gray line is actually a huge circular pipe, although the outside of the pipe has been slightly mottled by the erosion of time, but the traces on it similar to the surface of the water flow are still clearly visible, and cover the entire surface of the pipe, if you look closely, these patterns have a meaning that is difficult to express in words.

Due to the passage of time, the traces of destruction in the lowest part of the pipe have been covered by various plants, and some traces can occasionally be distinguished between the plants, and further up the pipe, there are several steps and platforms with anti-slip measures, which are evenly distributed along the circumference of the pipe, and lead to the distance along the direction of the pipe.

At the top of this huge pipe, there is a passage that is several times wider than the others, and there are three people walking forward in a row on it, probably because the passage has a certain slope, the three people are not walking fast, but the steps are steady and powerful, and it can be seen that their bodies still have strength.

"How are you feeling, can you keep walking?" A voice interrupted Jiqing's thinking, and the other party's breath was obviously much faster, but it was very regular between breathing and breathing, and it did not disrupt its own rhythm, and it could be seen that the other party was very experienced in this level of exercise.

"I think it's okay, but you're breathing too fast!" Before Jiqing could adjust his breathing and answer this question, a clear female voice responded on the side.

"I'm fine." Jiqing, who walked at the back, looked at the two people who stopped in front of him, and then stopped, he raised his hand and looked at the data displayed on his wrist, today's exercise has exceeded 9% of his regular number, but the total time used is about the same as usual.

Walking in front of him were a pair of young men and women, the men had ordinary faces, broad faces with hard lines, bright eyes, and capable movements between gestures, all of which were in line with the characteristics of ordinary Kuafu sailors. The woman on the side seemed too delicate, whether it was her beautiful appearance, slender figure, or elegant movements, they were all very different from the female crew members that Jiqing had come into contact with, which made him suspect that the other party was just artificial intelligence.

However, although after a short period of time together, he couldn't help but doubt his own judgment, and women's delicate emotional expressions, especially the sincere emotions exposed to male companions, are no different from human beings. Jiqing felt that the other party must be a real crew member, but he used some kind of program to optimize his appearance.

I heard that women on the earth pay great attention to their appearance, and these habits may have been engraved into the genes of many women after thousands of years of precipitation!

"It's almost time today, I think I can rest, and I'll continue next time." The woman said. "This little brother should still have a job after a while, don't be too tired and affect his work."

"Okay, then let's sit down and rest, after all, there is still a long line behind Hualong Road." The man nodded, "My mentor once said that everything should be done in moderation. ”

"Your instructor is very different from my instructor." Jiqing smiled bitterly, "My instructor's motto is that the power of human beings is infinite, but it has not been stimulated. ”

It is not surprising that there are differences between people and people's thoughts, some of which are diametrically opposed, and that different experiences can create different ideas and personalities. My mentor had a great deal of success and believed that he was able to face any difficulties, but after experiencing many life problems, he changed his mind and made his own choice. ”

"Exposed personality doesn't have to be real!" The woman stood next to the man and leaned back, although she was very close to her partner, but she kept a slight distance, showing both affection and her stability, she looked at Jiqing with a smile and said, "People's inner and external performance are sometimes different, maybe your instructor also has a little princess in his heart." ”

"Him?" Ji Qing thought of the instructor who roared like a violent bear when he was training, and he felt a slight pain in the depths of his ears, he frowned and shook his head, "I don't think so, the little princess won't let people walk Hualong Road in seven days." ”

"Seven days?" The man said in surprise and incredulity, "Even if you have good physical strength, it will take you three days just to climb the countercurrent section, right?" ”

"How is it possible, with the air conditions of the plateau, even if it is 300 kilometers flat, I have to walk for seven days." Ji Qing said with palpitations, "None of us were able to meet the standard, so we were punished ten times in Hualong Dao, and we still went back and forth!" ”

"Round trip? Ten times? The woman opened her mouth slightly in surprise and couldn't help but reach out and put her hand on the crook of the man's arm.

"No wonder you're so familiar with this place." The man stretched out his other hand and gently held the hand in the crook of his arm, and the relationship between the two was obvious.

"That's all too familiar!" Jiqing looked at the familiar scene around him, and in the world of Kuafu, everything does not change with the passage of time, "Although that time was painful for us, when I climbed the reverse current and stood on the dragon gate, everything in front of me made me unforgettable for the rest of my life. ”

"Going up three thousand meters against the current, one leap over the dragon gate is extraordinary. The dragon gate can indeed sublimate a person's spirit. The man's eyes lit up slightly, "I have stood on the top of the world's seven mountain peaks, but there is no place that can be compared with the artistic conception of Longmen, where is the perfect combination of the peak of human technology and the top of nature." Especially from the dragon gate downward, looking at the Hualong Road that crosses thousands of mountains and dangers but goes straight up, the form of looking up and wanting to fly represents the unyielding spirit of all mankind in the face of the mysterious universe, and it is also the spirit of Kuafu. ”

"Hualong Road, Hualong Road, ordinary carp through this countercurrent, over the dragon gate, can become a dragon, get rid of the ordinary, travel the world. It is like climbing Hualong Road over and over again, standing on the Dragon Gate again and again, our generation of Kuafu people who have not gone through hardship and tempering can fade away the immaturity in their hearts and face this lonely starry sky. Jiqing's fists were clenched tightly, and the fearless and unyielding spirit of boasting his father filled his heart with the memories of the past in his mind.

Hualong Road is a milestone in the history of human spaceflight, and from the day it was built, mankind entered the fast track to explore the solar system. The history of human space is very tortuous, human beings at the end of the 20th century AD gave birth to the first prototype of the original spaceship that can be called the space station, this space station was completed by the 13 countries with the strongest scientific and technological capabilities in the world at that time It took nearly 13 years to complete, representing the highest achievement of aerospace science and technology at that time.

At that time, the way of space flight was relatively simple, generally by propulsion aerodynamics to launch objects to low earth orbit, its efficiency was very low, although the success rate with the development of science and technology is getting higher and higher, but the high cost has always discouraged all countries and economies.

From the beginning, one family dominated to two hegemons, and then to the rise of multiple levels, and the alliance of major powers ...... Over time, this "simple" technology has been developed by even some professional technology companies, but the rate of return that is very mismatched with the investment has led to a dead end in the dream of flying into space, and fewer and fewer people are willing to pay for this dream that is divorced from the reality of survival.

Take the first space station of mankind as an example, this structure with a length and width of about 100 meters and an area of about the size of two football fields, weighing about 400 tons, has only been in operation for 20 years and has cost more than 700 billion yuan, exceeding the GDP of most countries in the world, and the later maintenance costs are almost about 30 billion yuan per year, and what about the benefits?

Hehe......

In the saddest period in the history of human aerospace technology, the original human race broke through itself to the great project of the universe, but it turned into a game for the rich to show off their wealth...... I'm tired of playing on Earth, so I went on a trip to space some time ago...... This sentence has become an indispensable line in some film and television works.

Although by the beginning of the 21st century, the cost of launching one kilogram into the earth's orbit has shrunk to about 130,000 yuan, the barren space in low-earth orbit that is gradually covered by space junk is no longer attractive to mankind, and the distant satellites, planets, and asteroids cannot easily exploit resources for the earth's use.

How can the resources and human beings on the earth get rid of gravity and enter the universe safely with the smallest energy consumption and the most simple and direct way? This has become a key problem for human beings to explore the universe.

Aero engines carry high-altitude secondary generation, space elevators, anti-gravity technology...... The human imagination is beginning to diverge......

Under the accumulation of human imagination, a great project to divide the coordinates of the times was born from thought......

Hualong Road is taken from the allusion of the carp jumping over the dragon gate in Chinese culture, and because Hua and Hua have the same sound, Hualong Road is in the territory of the People's Republic of China, so the official name is Hualong Road. Ancient legend has it that when the Yellow River carp jumps over the Dragon Gate (Yumenmen Gate, Hejin City, Shanxi Province), it will transform into a dragon, soaring into the sky, and it is otherworldly. "Piya Shi Fish": "As the saying goes, the fish jumps over the dragon gate, and then becomes a dragon, only the carp may be." Qing Li Yuan's "Worm Fan Object": "Carp...... The yellow one climbs Longmen Mountain against the current every year in the spring, and the heavenly fire burns its tail from behind, and it turns into a dragon.

The end point of this Hualong Road is called the dragon gate, when the object uses a special carrier to pass through this pipe that is almost a vacuum inside, and accelerates in several ways based on electromagnetism in the middle, and finally rushes through the dragon gate, it will have the first cosmic velocity to get rid of the earth's gravity, and thus rush into the near-earth predetermined orbit.

This is a vacuum electromagnetic acceleration pipeline that crosses Xinjiang from west to east near the edge of the Tibetan Plateau, and finally crosses into the Kunlun Mountains, with a total length of 320 kilometers, and ends at the junction of Qingdao and Singapore, close to the highest point in Qinghai Province, with an altitude of 6,860 meters above the peak of Bugdaban, that is, "Longmen".

Through the transportation mode of Hualong Road, the resources on the ground can be continuously sent to the space low earth orbit spacecraft construction base at a lower cost, and this Hualong Road later became the basis for the realization of the Kuafu plan, and mankind has since entered the era of "breaking out of the cocoon", and the strongest layer of this "cocoon" is gravity.

Among the four fundamental forces in the universe, the strong nuclear force and the weak nuclear force are based on the microcosm and are also the most hidden forces; Gravitational attraction is the most mysterious, although it is the smallest of the four forces, it is ubiquitous in space, and it can bring together all kinds of huge celestial bodies in the universe; Electromagnetic force is one of the application forms that human civilization is best at using electricity, and electricity is the basis for the development of modern human civilization.

"It seems that your instructor is not an ordinary crew member, and he actually changed you in this way." Qingyu admired this instructor very much in his words.

"He's back from the Vanguard Exploration Ship!" Jiqing mentioned the origin of his instructor, and there was some unknown pride in his heart, "After completing the task of training us, he took the initiative to ask to return to his original post on the ship." ”

"No wonder he has such a resolute character."

After rescuing the Kuafu from Renhe Civilization, they used their super technological ability to bring back all the lost supply crates of the human race, and let the surviving crew temporarily stay on their "spaceship" to build the new Kuafu, Shennong, and the Pioneer Exploration Ship. Since then, humans have been sailing under their protection for nearly 84 years, and most of the Kwafu crew have hardly experienced hardship until now, however, there are exceptions, and that is the Pioneer Exploration Ship. Since the construction of the ship, this exploration ship has been out of the protection of Renhe alone, and has been sailing at the forefront of Kuafu's voyage, which is an arrangement for Kuafu's senior management to be prepared for danger in times of peace, and everyone on this ship retains the spirit of the old Kuafu era.

"Then, this time the gravitational wind is aberrant, are your instructors okay?" The woman asked worriedly.

"It's okay, one of our fellow students contacted him, and he cut it off after a few words, it seems that he has been busy with the sudden discovery of the gravitational field for a while now."

"Isn't that mysterious gravitational field still inconclusive?"

"I have no new information, and I can only learn about the situation through the briefing of the General Staff Officer." Jiqing is mainly responsible for the contact with the Shennong, if there is anything about the Shennong, because Yan Ru is there, he should be the first person to know.

"It's a pity that the Renhe spaceship has long since left, and we still don't have any way to communicate with them directly." The man said with a sigh.

"Is there no way?"

"Not yet, after all, the gap between life forms and technology cannot be easily bridged." The man said regretfully.

"It's time to prepare for the next shift." Hachi's voice suddenly came into Jiqing's ears.

"I'm sorry, it's time for me to go." Jiqing said apologetically that this time he met a crew member who could talk to Kuafu in Hualong Road, and he originally wanted to get along for a while.

"Well, I hope we can meet next time." The man said politely.

"Goodbye then!" The woman gave him a nice smile.

"Goodbye!" Jiqing ended the encounter at the urging of Hachi.

"What kind of civilization is Renhe?" Jiqing left the Kuafu space with questions, and couldn't help but start reading the information about them in his heart.

Renhe civilization, a non-mechanical civilization, is far superior to humans in the study of microscopic particles, and is good at using radioactive elements and nuclear energy to manipulate microscopic particles. They have a very strong individual vitality, a long lifespan, generally 3000-5000 earth years, love to explore the universe, the way is incredible, they can use a large number of small and medium-sized drifting stars between the stars as a tool to travel between the stars, and before the encounter with human civilization, the longest travel in the universe of the exploration group has sailed about 900 light years away, exploring nearly 1,000 star systems, and establishing contact with 8 civilizations (human beings are the ninth).

Due to the Renhe civilization's focus on interstellar exploration, interstellar communication and navigation technology is extremely developed, which can also be used as a reference for mankind, while other technologies cannot be studied and used due to the limitations of Kuafu's research capabilities.

For a long time, the information of the Renhe Star people has been regarded as the top secret on the Kwafu, and few people can access it except for the top echelons of the fleet and the scientific research team.

The reason given by the fleet is very clear, the first is to protect them from the unintentional infringement and influence of individual human beings, because the mutual relationship between them and human beings has not yet been fully established, due to the huge difference in life forms, so that the two civilizations must first take the formal official exchange as the standard, and strictly prevent the individual thinking from affecting this process in the early stage.

The second reason is that the living environment is different, the living environment of the Renhe Star people can not be adapted to by human beings at all, and even cannot be close contact, even if the use of scientific and technological means to isolate, human beings must also maintain a certain safe distance, that is to say, since the two civilizations began to contact, there has been no close communication between individuals, and the specific communication method is listed as the highest top secret.

The conventional way of communication is only carried out through the means of human electromagnetic signals, and the understanding of cosmic light waves by Renhe civilization is beyond the reach of human civilization.

There are a few other explanations, but they are all based on the above two points of extended analysis.

The public information that the Kwafu crew was able to obtain was that the tank that had been altered by the gravitational wind had entered the detection range of a space exploration group of the Renhe civilization, and with the study of this tank, they discovered the upcoming destruction of the first generation of Kwafu and saved the Kwafu.

Since then, the surviving Kuafu, with the support of Zairen and civilization, used the gene pool to breed crews on a large scale, and rebuilt the Kuafu, as well as the Shennong and the Pioneer exploration ship.

After that, the Kuafu followed the Renhe Civilization Exploration Group to conduct scientific and technological exchanges and learning, and continued to complete the space exploration mission, while the Shennong embarked on the return journey back to Earth with galaxy-level communication equipment and some communication technology.

At the end of the information, a paragraph is noted, benevolence and civilization are the friendliest and closest friends of mankind, they are selfless, fraternal, kind, almost all the words that praise the noble spirit of human civilization can be used on them, they are the first enlightenment teachers of mankind in the galaxy, and human civilization will always respect them.