The entire Black Iron City is also for this purpose, to establish more than a dozen arsenals in Joaquin City and Black Iron City, respectively responsible for the production of clothing, tools, guns, ammunition, cannons, and even including wheels and badges, etc., in addition, infrastructure is also a top priority today, with the expansion of the Black Iron City, the increase of the city, the population size is also getting bigger and bigger, today's Black Iron City, itself is already a huge market, but now in the Black Iron City, in addition to the Black Iron City to Asakusa City, because of the needs of the war, The roads are barely regular, and the roads in other places are still dominated by small roads and dirt roads.

This is obviously not possible, the distance between the Black Iron City and the city is about 120 kilometers in a straight line, but because of the complex terrain, it is often necessary to go up and down the mountain, so the real distance is probably about 300 kilometers, such a section of the road, put it in modern times, it can be solved by tunnels and other methods, even if you use a car on both sides, it only takes less than two hours to arrive, if you use high-speed rail, it does not take 20 minutes.

But because of the change of the earth's crustal movement, the original tunnels have disappeared, so even if Du Erxin wants to rebuild, it is impossible at all, so now from the Black Iron City to Picheng, it is necessary to rely on crossing the mountains and mountains, often it takes four or five days to arrive, this is still the speed of the army, if it is an ordinary caravan, it even takes a week's time, because this section of the road is too steep, and the merchants carry all kinds of goods, large carts and small bags, which are more difficult to walk than ordinary people.

This is obviously not good, nothing has happened now, and it can still be so, but if something happens to the foothill city or the city, such as the Guangyuan Kingdom has launched an attack, or the remnants of the original ruler have taken the opportunity to rebel, Liu Sanyi's army will take four to five days to arrive, which will directly miss the opportunity to lose the fighter, and even lead to the re-loss of these lands and populations, which is naturally intolerable to the Black Iron City, so it is inevitable to build roads.

But at the same time, because the infrastructure foundation has been destroyed, can not be re-paved like the road between Joaquin City and Zitong, so the construction of the road is much higher, Dürr's new plan is relatively modest, that is, people in the seventies and eighties The most common winding mountain road, climbing up layer by layer around the mountains, this kind of road is naturally unpleasant, although he reduced the difficulty of the road, but also brought people a longer road, but with the technology of today's Black Iron City, the bridge across the mountain can not be built at all, Most of these hills are about two or three hundred meters high, which is not a big deal in normal times, but in this piece of land, it is really very difficult to deal with, and because of this, this stupid method can only be adopted.

In this regard, some bridge and road experts also have different opinions, believing that roads with more steep slopes should be built, so that the distance will be relatively short, and the cost will be reduced a lot, and the army march is completely no problem, this idea is obviously to classify the role of the road as the idea of the military role, but this is obviously something that Duerxin cannot agree with.

After all, to build roads, in addition to ensuring the passage of the army, but also to ensure the passage of merchants, if the road can be steep, then the merchants can not pass at all, after all, in addition to carrying themselves, merchants also have to carry a large number of goods, these goods need ox carts, horse-drawn carts to transport, the slope is too steep, these commodities will not be able to transport, since they have decided to build roads, naturally it is to be used for both military and civilian purposes, can not only take care of the soldiers, but not care about the merchants, then the actual value of the road will also be reduced.

At the same time, exchange and trade will undoubtedly bring wealth, if it is only for military use, then the road will only be invested, and there will be no investment, only the merchants trade on it, and the road will not be in vain, while the relevant opponents believe that the era of ox carts and carriages will soon pass, and in the near future, the automobile will reappear, and the roads will be built a little steeper, and the ox carts and carriages will not pass, but it will be easier for the car to want to pass.

This idea is not without reference, these experts are not a group of people living in the ivory tower, they put forward their arguments for a reason, with the foothills of the city and the city of Picheng integrated into the Black Iron City, a large number of pastoral era technology was restored, and the trade with the Guangyuan Kingdom and the Holy Alliance, also let the Black Iron City harvest a lot of smuggled books, which is strictly prohibited and prohibited trade between the three parties, but unfortunately, the business of killing the head is done by someone, and the Black Iron City is in secret, Almost the same weight of gold as a book was exchanged for a book.

As long as any merchant can bring a book to Black Iron City that is not in the library, then give gold according to the weight of this book, through such a reward, a large number of merchants are not afraid of life and death, and provide all kinds of books to Black Iron City, of course, Guangyuan Kingdom and the Holy Alliance also treat Black Iron City in the same way, in terms of knowledge, no one will be stupid and only attacked, everyone knows that knowledge is the biggest weapon in the field of thought, especially for those of them who have just conquered the world, they know very well, It is not enough to rely on force alone, only knowledge and technology can lead them on a greater path.

Therefore, through the way of the parties, whether it is light or covert, the books between the various forces have almost been leaked, except for those that are particularly tightly kept, which is undoubtedly a good thing for all parties, a large amount of knowledge has reappeared, so that people have filled in a large number of loopholes, and the technology that has been recognized as dead has been resurrected in the hands of these experts, just like trains, railroad tracks, steam engines, etc., so the experts also believe that maybe in the near future, the car will be able to reappear, When the time comes, the road will naturally be ready for use.

Du Erxin believes that it should be conservative, although today's technology is developing at a very fast speed, but it is still very difficult to make a car, not to mention those heavy trucks, I am afraid that in the next few years, it is impossible to reproduce it, transportation mainly depends on the road, so Du Erxin still believes that it should be built relatively easy to transport winding roads, rather than too steep roads. new world

This idea was finally recognized by the Black Iron City, Du Erxin has unconsciously become an authority in the field of Black Iron City construction, even Skywalkers, when making decisions, will be more willing to refer to his answers, and at the same time build a car This kind of thing, it is indeed not simple, after all, the parts and operation of the car are very complex, the world's first train was in 1804, and the world's first real car was to play in 1879, it can be seen that the scientific and technological content of the car is far from being comparable to the train.

After all, the train runs on the tracks, there is no need to change direction, and the speed is almost fixed, in addition, the train has a large capacity, a huge head, and there is no need to think so much about the shrinking of the steam engine, but the car is not good, if the engine is too huge, then the whole car will become particularly huge, and this has a very severe challenge for the road, so the construction of the car is based on the miniaturization of the engine, and today's Black Iron City, but also can not do this, to master this aspect of the technology, It is not only a design problem, but also a problem of parts and materials, and there is a breakthrough in materials, even in modern times, it is a very difficult thing, and materials science is also known as the most metaphysical science, and many times it is actually by luck.

Although Black Iron City does not need luck now, you only need to know the correct answer to the formula through the books of the pastoral era, but it is not that you can directly reproduce it if you know the correct answer, and he still has many basic theories and research applications that need to be compared one by one before he can use them, and many of these materials are missing, after all, more than 300 years have passed, and the earth's crust has undergone serious changes, and many books have long been submerged in the long river of history, just like people know the principle of making the atomic bomb, but want to make the atomic bomb, The way of the world is now only made by a few countries.

Knowing the principle does not mean that it can be built, there is still a very clear difference between science and technology, and because of this, they also think that the construction of cars is still a difficult job, especially for large trucks, it is even more difficult, which is almost impossible to achieve in the short term, and the passage between the city and the black iron city must be built as soon as possible, so it is inevitable that there is some anxiety.

In the end, Dür's new plan was adopted, and some experts were quite unhappy about this, but they were either because of their lack of qualifications, or because the identity of Foothill City and Picheng was not recognized by the upper echelons of Black Iron City, and from the upper echelons of Black Iron City, these experts from Picheng and Foothill City obviously put forward their own claims with a purpose, so they would always be skeptical of their claims.

After all, he is a scholar and a real engineer, and he doesn't think too much about other conspiracies, as for Shu Han, he doesn't particularly care about this matter, he cares more about the railway from Huajin City to Zitong, which has been maintained for two years, and is finally completed under Shu Han's expectations, and now only the final finishing work remains.

For this sixty-kilometer railway, Shu Han can be said to have invested a lot of effort, non-stop research, and his father himself has also been engaged in the study of tunnels and the like, after all, he is a scholar in the field of minerals, as his son, Shu Han has also been exposed to a certain education since he was a child, and has a deeper understanding of geology, soil and other knowledge, and also has the thinking of a science and engineering person, so he reads a lot of literature and books, and almost every week will go to the construction site to take a look, the development of the railway, It can be said that this railway was completely built under Shu Han's nose, and now that it has finally been built, watching the familiar railroad track stretch out in front of his eyes, until the end of the mountain forest, Shu Han feels very excited.

And finally the commissioning of the train is also underway, according to a document left by the pastoral era, the experts of Joaquin City reproduced a locomotive one by one, very similar to the locomotive of the nineteenth century, with a huge chimney on its head, driven by burning coal, and finally through the calculations of scholars, the horsepower of such a locomotive can reach about 800 horsepower, this speed is simply pediatric in modern times, but in this era of initial revival, it is undoubtedly a huge innovation, This means that the locomotive can drag more than ten carriages and speed forward at a speed of 80 kilometers per hour, which means that the distance from Huajin City to Zitong is only an hour's drive, which will provide extremely fast speed for the transportation of resources.

On the other hand, after three years of transformation, the entire Zitong copper mine has initially had an industrial base, no longer as before, simply with human hands and iron tools for excavation, but with more advanced equipment, such as excavators driven by steam engines, etc., to break the stones, in order to facilitate people to carry out, and at the same time establish a production line, so that people can save the time of handling, workers only need to transport the copper ore out of the mine, and then send it to the track, The tracks then carry the ore into the smelter and directly become the raw material for copper.

Then put into the train iron sheet, and finally transport, until it arrives in Huajin City, for secondary processing, into a new product, which is undoubtedly a revolutionary progress for the development of Zitong, and then if the Black Iron City and Zitong's railway is built, then a large number of copper ore directly into the Black Iron City into currency and other deep processing products, will provide a huge source of funds and income for the Black Iron City.

On the other hand, the road leading from Huajin City to the Black Iron City has finally been completed, the road is about ten meters wide, enough to accommodate the ox cart to run on it, and at the same time, under the cement floor, there are more than 50 centimeters of stone paving, in order to ensure that the road will not collapse because of the driving of the vehicle, and can ensure more than 20 years of use, this is undoubtedly the largest project in the Black Iron City in recent years, in addition, the railway from the Black Iron City to the Huajin City has finally started, this railway is different from Zitong, There is a tunnel between the two, so it is possible to build directly on the foundation of the tunnel, but there is no tunnel between Joaquin City and Black Iron City.

In order to minimize the appearance of winding mountain roads, experts spent more than two years to climb almost all the surrounding hills, and many people died because of the attack of fierce beasts in the forest, and finally designed this railway planning map, which is not enough for outsiders.