Lao Lin didn't pay any attention to Lei Mengyu's urging with puns. He tapped the metal wall of the crossing cabin and asked Dang Aiguo: "What material is this? It doesn't look like titanium alloy."

"Oh, it's iron." Dang Maiguo replied.

Everyone widened their eyes and used cheap iron to make the crossing cabin, which was too incredible. Dang Paiguo continued to explain: "It's not ordinary iron, it's dislocation-free iron."

Everyone continues to be ignorant. No one has ever heard of the term "Displacement-free Iron", including Lao Lin.

Only Liu Yanzhi said in confusion: "Isn't that something in science fiction?" When he was in the fifth grade, he saw this word in a science fiction novel written by a Soviet writer, but he didn't expect it to exist in reality.

Dang Paiguodao: "Now is not the time to discuss this. Lao Lin, come in first, and I will give you some popular science."

Lao Lin sat in the crossing cabin, tied his seat belt, took a deep breath, looked straight ahead, and saw from the corner of his eyes that the hatch cover slowly closed, and his heart was undulating.

After all, traveling through history is not a small matter. Lao Lin instantly remembered a lot, remembering the ups and downs of the past few decades, the martyrs in Montauk's plan, and the words Armstrong said when he stepped onto the surface of the moon. This was a small step for me, but a big step for mankind. After years of long-term wishes, he was mixed with emotion, and was also worried about whether his aging body could withstand the huge tearing force and the turbulence of time caused by time travel.

"Displacement-free iron is to eliminate dislocations. Iron with neatly arranged molecules is several hundred times stronger than ordinary iron. For example, building a railway bridge with ordinary steel requires tens of thousands of tons of steel and hundreds of workers for hundreds of working days. If it is built with dislocation-free iron, then weaving one with iron wire is enough." Dang Paiguo said eroticly.

Lao Lin understood this principle, but he could not believe that the Chinese have mastered the technology of smelting dislocation-free iron. If this technology really exists, it is impossible to win the Nobel Prize. With the desire of the Chinese government and the public for the Nobel Prize, neither the secret will be deliberately hidden. The only possibility is that this time travel cabin is not a product of the present, but itself comes from the future.

He expressed his guess, and the Party Patriotic did not answer directly, but said that we would have a long time to discuss this issue during the long journey, and I would also like to hear interesting stories about the Montauk Project.

When Liu Yan heard the conversation between them, he suddenly realized that perhaps this was a transaction. Party Patriotic and Lao Lin exchanged secrets with each other. Lao Lin stayed with the secret of traveling forever in 1969. Party Patriotic used Montauk's secrets on Cuiwei Mountain, each taking what he needed and getting what he wanted.

"We're here." Dang Aiguo said, unbuttoning his seat belt.

There was no discomfort reaction. The crossing was completed. The hatch was automatically opened. The birds were singing and the flowers were fragrant outside. The sky was blue. This was Cuiwei Mountain in September 1969. They had returned to forty-eight years ago.

Except for Lao Lin, the rest are senior time travelers. They packed their equipment in an orderly manner and hid the crossing cabin with branches and leaves. Only Lao Lin was extremely excited and murmured to himself, wishing to kneel down and kiss the land in 1969.

The great satisfaction after the wish was fulfilled made Lao Lin seem to be ten years younger. After a brief loss of composure, he returned to normal and went down the mountain with everyone. Six time travelers dressed in the People's Liberation Army lined up and walked on the gravel road in the late 1960s without any sense of incongruity.

In early autumn, the climate is pleasant and the dense shade of trees on both sides of the road makes a long journey more like a leisurely hike.

"Professor, now you can tell me, is the time travel cabin from the future?" Lao Lin asked, his steps were vigorous and he was not slower than others at all.

"Of course." Party Patriotic said as we walked, "This crossing pod comes from the future, from the world that has been destroyed. We are just users, not inventors. My goal and you are actually the same. They are all to prevent our earthly home from being destroyed by a group of evil ambitionists. We have not had much time left, to be precise, two years and one month."

Lao Lin was not surprised. The destruction of the world is said to be very marketable in the West. A large number of Hollywood movies reflect this complex. Human beings do not cherish their living environment, pollute, develop viruses or intelligent robots, and destroy the world with their own hands. He himself also holds this view. He said it from the party’s patriotism at this moment, just to make him more confident.

"I want to ask you a risk, are you from the future?" Lao Lin said, he has studied the information about the Party's patriotism and is very interested in his legendary life experience and experience.

"I'm not." Party Paiguo smiled, "but there are people from the future in our team, so we are so determined to embark on the road of human self-salvation. With the time tunnel, changing history and changing the future, everything becomes feasible, but it only requires our efforts and even the price of our lives."

Lao Lin nodded. He agreed with Professor Dang's principles, but was more interested in the details. He asked: "I noticed that the time travel process is painless. This is a technical difficulty that cannot be broken through in the Montauk plan. How did you do it?"

Dang Aiguo said: "Did you know there was a wall-walking technique in ancient China?"

"Hmm." Lao Lin took a scrupulous attitude.

"Time travel is equivalent to time travel. How can human flesh and blood pass through a wall made of bricks and stones? Unless this person turns into a ghost, that is, a nihilated molecular structure, but then the person will not exist." Dang Aiguo said, "Time is irreversible unless there is a wormhole. There happens to be such a person on Cuiwei Mountain. In addition, future technology is made of dislocation-free iron, which can withstand the high temperature and high pressure in the wormhole, and we can travel smoothly."

Liu Yan, who was in charge of the palace, couldn't help but feel annoyed when he heard these words. When he started traveling, he didn't have any traveling cabins, but lying directly in the pit and endured the torture of flames. Dang Aiguo clearly had a traveling cabin, so why didn't he take it out earlier? Later, he and Guan Lu traveled together, riding in a two-person cabin. Now everyone uses a six-person cabin in a team. They are clearly newly created, but Dang Aiguo says that something comes from the future. It's really a lie.

Old Lynch said: "As far as I know, wormholes are everywhere, fleeting, and extremely subtle, smaller than the smallest quark. How could the wormholes on Cuiwei Mountain be so big and long-term? How did you do it?"

Dang Aiguo said: "Future Technology, I can't understand it even if I tell you." He stopped and waved, and a truck carrying supplies stopped behind him. The driver stuck his head out enthusiastically and asked: "Comrades in the People's Liberation Army, where are you going?"

...

The traveling group successfully bought a train ticket to Beijing, the motherland, with military uniforms and impeccable letters of introduction. Most of the express trains were soldiers, and the rest were mainly public officials. Only a couple with children seemed to be visiting relatives in Beijing.

The traveling group bought hard seat tickets, which happened to be two rows of seats that were sitting opposite each other, so that they could avoid intersecting with others and unnecessary trouble. In this era, the speed of cars was slower, and the sound of monotonous wheels hitting the gap between the rails made people drowsy. Outside the window was the endless North China Plain, villages, farmland, woods, telephone poles, and red slogans on the earthen walls all had obvious marks of the times. Every time they arrived at a stop, they would stay for a long time for passengers to rest and purchase food on the platform.

On the seat on the other side of the aisle, four air force cadres in blue pants were sitting. They took out peanuts and Erguotou, and chatted while drinking, talking about how to attack the Soviet counterfire bomber. This thing is supersonic penetration, and our army's fighter jets and air defense missiles are not reachable. The officers were frowning and smoking, completely ignoring the fact that there were women and children in the carriage.

Guan Lu couldn't help but want to say something to stop him, but was stopped by the Party Patriotic eyes. She turned her head out of the window in anger. There was a sudden flat-top mountain in the distance, without any trees.

"What a strange mountain." Guan Lu said.

Lao Lin explained to him: "That is an artificial orogenic accumulated by engineers. There is no danger to defend the North China Plain. The General Staff finds ways to build its own high ground. There are dozens of artificial orogenics. Usually, an artillery battalion equipped with 130 cannons will be placed on the mountain to suppress the enemy troops within a radius of dozens of miles. In fact, this is just a wish. The Soviet helicopters can easily solve these artillery battalions."

His words aroused the interest of several air force cadres sitting next to him. One person came to distribute the cigarettes and asked which unit they were from.

"Confidentiality Department." Dang Aiguo politely dispelled the other party's expectations of chatting.

The journey continued to be boring until it arrived in Beijing.

The red capital in 1969 was in the middle of the eye of the storm. The clouds of the Sino-Soviet War hugged everyone's heart. The railway station square was empty, with only a few old cars parked alone. Passengers went out in battle one after another. The members of the traveling group did not go far, and went directly to the ticket office to buy train tickets to Ulanqab.

The most convenient way to go to Inner Mongolia is to take the train. As early as nine years ago, Beijing opened an international train to Ulaanbaatar and Moscow. Although Sino-Soviet relations were tense and the train had not stopped yet, Dang Patriotic successfully bought six tickets with the letter of introduction issued by the Beijing Military Region Command, and it was a soft sleeper.

The time of the crossing was very accurate. The international train departed tonight. The Party Patriotic strictly ordered the members not to cause trouble. Everyone stayed in the waiting room and were not allowed to go out and wander around. The difficult eight hours passed. They boarded the train again, and their destination was Inner Mongolia.

The hardware facilities of international trains are significantly better than ordinary trains. The soft sleeper compartment is more high-end, and no one disturbs it. The hierarchy system of socialist countries is more stringent. Those who are qualified to sit on soft sleepers are at least municipal leaders or military cadres of the same level. The flight attendant will not have time to curry favor with them.

The train broadcast is broadcasting the deep friendship between Vietnamese Chairman Uncle Hu and the Chinese people. At this time, Ho Chi Minh had passed away. Leaders of communist countries around the world are rushing to Hanoi to pay homage. History is rolling on track, and the fork is right in front.

At dawn, the train arrived at Ulanqab Station, and six soldiers got off the train and stood in the cold morning dew.
Chapter completed!