Douluo see you soon

Although it is said that steam engines cannot be dumped, there are many directions for the development of science and technology. In theory, it is also possible to directly use internal combustion engines. After all, the difficulty of metal processing in this world is very low. The original normal historical line cannot directly use internal combustion engines.

, the accuracy issue was taken into consideration.

If we are looking at a steam engine, the accuracy is more than enough. It is also possible to use an internal combustion engine directly. However, compared with these technological changes, the biggest change facing mankind in this world is actually the structural change in society.

Originally, human tribes were isolated from each other. It is not an exaggeration to say that they died of old age and did not want to interact with each other. The distance was really too far, and it was simply difficult to reach each other. Not only that, the outside world was freezing cold, with ice and snow.

It is not something that can be crossed easily. Some people tried to enter other underground caves through external passages before. Most people froze to death, and only a few individuals who had mastered a little extraordinary power were able to rely on the large amount of equipment they carried.

In a narrow escape, he came to other tribes.

But with the continuous development of technology, people have smelted steel that can survive in high temperatures. They can use cars to carry large amounts of magma to keep warm. They can wear warm clothes and walk in the ice and snow. They can even carry large amounts of water.

Liquid water travels through freezing areas.

The connection between caves has become closer and closer. While the connection has become closer, some people have begun to try to measure the distance between two caves through learned mathematical knowledge.

There are a lot of underground spaces on this planet. Sometimes you don’t need to go to the surface to enter another cave. It is possible for caves to be connected to each other through some quite rugged, maze-like roads.

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It's just that these roads are often difficult to explore, and when they are explored, they are quite steep and difficult to pass.

But this means that the straight-line distance between different caves may not be as far as imagined. Now that we know this, if we open a straight road between caves, can we go underground to other caves?

Arrive?

Tribes that have not yet developed industrial capabilities have accepted trade, but have not yet considered these things. However, the technology of the tribe where the travelers arrived has developed to a bottleneck. The current number of people has made it difficult for the technology to continue to develop further, and the small area

The caves made it impossible for the population of the tribe to continue to increase, so they began to try to build an epic project. That is to connect their own caves with other people's caves by digging tunnels underground. According to their estimates

, although the nearest cave to me is dozens of kilometers away from the surface, the straight-line distance underground may be only one or two kilometers. At this level, it may be possible to dig directly through it.

In this world, there is no shortage of resources such as steel. Especially when a large amount of magma pours into the surface, there are very many metal ores.

Even the magma itself contains a large amount of molten iron.

Therefore, during the process of tunnel excavation, metal was used directly and extravagantly as the tunnel's support structure.

Under normal circumstances, the support structures of early mines were all made of wood, but that was because in those worlds, wood was a material that was easier to obtain and process than steel. In this world, it is just the opposite.

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In an underwater processing plant, a person holds a metal hose in his mouth, which is a straw-like structure. His whole body is immersed in the water. The other end of the straw is connected to the outside air, allowing them to swim freely underwater.

breathing, and then perform various processing on metal in the underwater environment.

The efficiency of metal processed in this way is very high and it can process quite large metal parts.

In this way, it is completely sufficient as a supporting structure for the tunnel. This big project was originally planned by the leader of this tribe to be implemented in his lifetime. But the progress of the entire project was much faster than he imagined.

Metal tools can be distributed to everyone, and the earth and rocks excavated from the tunnel can be quickly transported out by carts or even rail cars.

As a result, the tunnel excavation speed was much faster than he imagined. It only took about two years to successfully dig this long tunnel. On average, it only dug three or four meters per day, and

In their calculations, the direction was relatively accurate, and they successfully connected to another tunnel. Their luck was also relatively good, and they did not encounter other lava rivers along the way.

When digging this tunnel, the chief of the tribe actually considered that he might dig through another underground river, causing the entire excavation team to be wiped out. However, he still made up his mind to carry out the excavation. The cost was affordable.

Although there is a risk of the entire army being annihilated, or even sacrificing one's current survival territory, there are also opportunities within the danger.

And this danger can be avoided. The human body is very sensitive to the temperature of this world. Therefore, when approaching the magma river, you can feel that the surrounding icy environment suddenly becomes extremely hot. At this time, you can.

Try to make a detour from the side, and use a large amount of construction waste to refill the area that was previously dug into the hot area.

The building materials in this world are not reinforced concrete. They use boulders directly, and metal is poured between the boulders. As long as the smelted metal is soaked in hot water, you can easily obtain a metallic liquid, which is like cement.

Between the cracks in the rocks.

That structure is much stronger than concrete. Even a rock structure cannot withstand the pressure of the magma river and will eventually be blocked by such a structure.

Fortunately, there was no such lava river flowing between the two caves, allowing them to successfully dig out the tunnel.

This chapter is not over yet, please click on the next page to continue reading! And with only two kilometers, such a short distance, the two caves are basically equivalent to merging after being connected together.

There was a little conflict between the chiefs of the tribe, but no war broke out. The Traveler tribe was so powerful that the soldiers surrounded the royal family of another tribe and killed their king.

He supported another surname and naturally took over the cave. The population also expanded to nearly two thousand.

It's just that the news of the merger of the two caves was kept secret by them. The people in the Traveler Cave knew that they did not have an absolute advantage in strength. They still needed enough time to make money and develop. The chiefs in other caves did not know that they had

With the ability to invade, he continued to trade, and then annexed one cave after another without anyone noticing, until he grew into a state that completely crushed other caves, and then ordered other caves to surrender to him.

Even if you don't want to surrender by then, you must surrender. After all, they are in an absolutely overwhelming position in terms of population, transportation, productivity, etc.

Although the chiefs do not have these complex concepts, they know how to choose based on instinct.

Cheng Ying rarely appeared in person during this process. He only gave certain on-demand broadcasts and reminders when they encountered technical difficulties. Moreover, these reminders were subtle, and many of them would be regarded as their own inspiration.

Now in the process of continuous expansion, the Traveler Tribe can already be called the Traveler Kingdom.

After ten years of expansion, the Traveler Tribe, which has an increasing population and increasingly strong engineering capabilities, has taken control of the surrounding area. There are a total of eighteen caves, and the farthest cave from the main base is a full fifteen kilometers away.

, Even so, they successfully opened the underground tunnel and established contact with each other after bypassing a magma river.

At the same time, railway tracks were also established between different caves and a railway network was established.

Railways are not just after locomotives. The history of rail transportation is earlier than trains. If it were on earth, there would have been rail transportation before trains appeared. But at that time, horses and other things were mostly used.

To pull, there are no big livestock that can be used in this era, but even if it is pulled by manpower, it will be much lighter if there are tracks. With the existence of rail transportation, the scale of existence is enough.

It calls itself a kingdom and its population has expanded to 10,000.

For the human race that can live on the vast surface of the earth, this is an inconspicuous number, but for the human beings who can only survive in underground caves, it is already a kingdom like a miracle.

When the population is large enough, the progress of underwater industrial development also begins to increase significantly, and a small number of people begin to contract production on farmland.

Although automated machinery has not yet been born, a large number of metal tools have made it much easier to cultivate farmland, and the difficulty of planting some crops in this world has also been greatly reduced. More people can engage in handicrafts besides agriculture.

and industry.

The pools used to smelt metal and make various equipment were made larger and larger.

Before this series of conquests, the largest pool was about three meters high, the longest was thirty meters long, and the width was about five meters.

It is made into this long strip shape to produce rails, so that enough length of material can be produced at one time. But for some large machines, the production space of this scale is still too small.

Now that there is a sufficient population, the water plants used for steel production have become larger and larger. The largest area now reaches five hectares. Although the depth has not increased much, the amount of water it holds

There are already a lot of them. Magma is used for heating internally. The entire platform is suspended in the magma river. This means that there is always magma heating the water to ensure that the water will not be damaged due to the decrease in external temperature.

Solidification also ensures that people working in the water have a relatively comfortable working environment.

As for how to adjust the water temperature, it relies on ice brought from the outside world. Every industrial worker must be skilled in using these ice cubes to control the temperature around him.

People have figured out that metals have different properties at different temperatures. It is not that the higher the temperature, the better. Therefore, sometimes it is necessary to isolate a space in the water and specifically add ice cubes to this space.

The temperature is lowered, keeping the metal in a slightly higher hardness state, and processing is performed in this state.

As for processing that requires a lower temperature environment, it can only be processed by using normal methods to create high temperatures in the outside world. If it develops normally, if you want to develop to this point, you want to rely on artificial high temperatures.

Smelting and forging metals requires the establishment of a town of at least hundreds of thousands of people. But today, the output of steel is already very high. And it can be easily processed into any shape. The construction of such an industry is very difficult.

Reduced.

Now that there is a sufficient unemployed population, technology is also developing continuously. After travelers came to this cave and brought advanced technology, the people in the cave realized the importance of technology. It

It can change the life that has remained unchanged for hundreds of years, and it can make a primitive tribe develop by leaps and bounds.

Therefore, any technological discovery or observation and summary of natural phenomena will receive great attention. And they discovered that heated metal will generate attraction and repulsion forces after it has been left standing for a period of time. And this attraction and repulsion force is related to these forces.

It has something to do with the direction of the metal. I immediately became interested.

In fact, this phenomenon is that the heated metal has weak magnetism after being magnetized by the planet.

The interior of the planet they were on was also an iron box, so it also had magnetic poles, which meant that a compass could be used here, and the heated metal could also be magnetized to a certain extent.

It's just that the magnetism obtained in this way is very weak. They have not mined natural magnets in nature, but this natural phenomenon has allowed them to conduct many experiments. With someone's secret encouragement, someone in this process

Electricity was discovered.

If in a traditional social environment, in a human society that has developed for countless years, the existence of electricity is suddenly discovered. Many people may sneer at this trick and think it is useless.

But in an era that had just been changed by advanced technology, this discovery aroused everyone's interest and received a lot of investment.

People think that these magnetic metals have great potential for development. If they become more powerful, they can theoretically be used as very convenient tools to be adsorbed on metals in the future.

The electricity that can be generated through these metals makes people here instinctively feel that there must be some connection between electricity and magnetism. Maybe they can rely on the shop to create metals with stronger magnetism.

It is because of such a deviation that the world's research and development of electricity began.

[To be continued]

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