Zhao Xin is very rich now, that's right, the business of pure iron materials is at least more than 50 million a year, this is not all of the Dinghai Navy, all kinds of different businesses, at least more than 200 million yuan of funds have been gathered, and the most important thing is not this, but new currency.

Of course, Zhao Xin knows how much value will be generated by controlling a currency, especially for materials like Dinghai coin, where the original material is very cheap, and the leading technology is the key.

In the absence of the steam engine, stamping could not be produced on a large scale, and this Dinghai coin was almost impossible to replicate.

The appearance of Dinghai coin, not only very exquisite, but also difficult to imitate, when the propaganda of the Dinghai Navy expanded, coupled with the terrible commercial behavior of the Dinghai Navy, all of a sudden, let the Dinghai currency began to spread widely.

From Zhao Xin to now, it has been a year, Zhao Xin has made a total of about 200 million Dinghai coins, these and other coins exchange, has become a circulation currency in the Northern Song Dynasty, although the volume is not too large, has not been widely circulated throughout the Northern Song Dynasty, but the speed of making money, has been terrible to the extreme.

A coin that is not even half a penny, as a price of 100 wen, even if the cost of card system manufacturing is added, it is not too high, the cost of 200 million guan, may only be a few million, but in exchange, it is 200 million guan.

Even if the investment is huge in Dinghai, the remaining funds in Zhao Xin's hands are more than 300 million, that is to say, if you simply buy horses, you can buy 3 million horses at once.

It seems that even Zhao Xin, the first person to be rich in the Northern Song Dynasty, can't eat all of this transaction, but don't forget, the Dinghai Navy is a terrible money-printing machine, Zhao Xin has a reality, and it can be manufactured at least 200 million yuan per year, and the Dinghai itself, the ever-expanding industry and commerce, can also create at least a considerable amount, and it will be completely digested in one year at most.

However, before these, there is another premise, that is, the horse-drawn train project, when this project is spread all over the land of the Northern Song Dynasty, it can really play a role.

This is also the fundamental reason why Zhao Xin, who is not afraid of influence, went to Bianliang specifically.

This is not a railway, but it may be innumerable, at least, the entire prosperous place of the Northern Song Dynasty is included in it, so that it can truly reach the Quartet.

The role of the railway is not only to communicate with each other, making the distance between the world smaller, but also to play many military roles.

Compared with slow-moving ships, railways are faster, even horse-drawn trains, which can guarantee 50 miles an hour, or 1,200 miles a day for 24 hours, and really reach a thousand miles a day.

This is not an eight-hundred-mile expedited such a small number of cavalry to transmit messages, but a carriage of at least 15 tons, which can pull up a huge railway of more than 100 people, that is, as long as there are enough resources, it takes 2 days to travel 2,000 miles to transport the smallest number of 10,000 soldiers to the destination.

The advantage of this for a central dynasty is very terrible, the central government can centralize the management of the army, and there is no need to send soldiers to the nine sides.

Of course, the nine sides are not dispatched at all, but they can be combined with the fortress, a small number of dispatches, there are hundreds of thousands of fortresses, maybe hundreds of thousands of people, it is enough to ensure the safety of the border pass, and under the premise of any abnormal movement, troops can be quickly mobilized to reduce the problem of stationing in ordinary times.

Of course, this is a long-term vision, and now, with the situation of this matter in the northwest, it is possible to establish it, but everything is difficult at the beginning, with the powerful role of the railway, as long as the construction begins, it will not be contained.

By the end of the 19th century, when China had fallen into a miserable situation of semi-feudal and semi-colonial, railways were still popular.

Unfortunately, due to the constant pit of foreign countries and the constant corruption of local people, China's railway construction has never been carried out on a large scale, but by the time of the Xinhai Revolution, only these small number of railways were built, all of which were profitable, and the ability to make profits was quite strong.

The restrictions of the times and the limitations of science and technology made Zhao Xin have to use horse-drawn trains, which sounds very unreliable, you have to see what you compare with, backward and not backward, are relative.

For example, the blast furnace used by the Navy today is not as good as the small blast furnace in the fifties and sixties after the liberation of China, but in the Northern Song Dynasty, it was a miracle.

At the end of the 19th century, it was a historical regression, unheard of by the rest of the world, but similar solutions are not unheard of in developing countries.

It may not be a horse-drawn train, but it is similar, using pack horses to transport goods on a large scale, which supports commerce.

However, at the end of the 19th century, when steam locomotives were already widely used in countries around the world, this was a historical regression. There are more powerful steam locomotives, which can pull up several, or even a dozen, carriages at a time.

The layout of the railway is such that at most seven or eight horses pull the carriages, and if there are more, they will affect each other, but it will not be conducive to the arrangement.

It sounds like a lot, a horse, in later generations there was a special unit, one horsepower, maybe in the beginning, a steam engine was not even as good as a horse, the first steam train in history, he only pulled about 30 people, not as good as eight horses.

However, the continuous development has made the steam engine have no upper limit, and at the end of the 19th century, it has been able to reach tens or even hundreds of horsepower, so that the role of the steam engine is much greater.

Under the current scientific and technological conditions, it is impossible to make a steam engine, and can only use a horse-drawn train, the cost of horses is too much, the transportation capacity is quite limited, the speed of the horse, the upper limit of the pulling force, even if it is 8 horses, or even 16 horses, the carriages that can be pulled are also very limited, at most two, in general, one is conventional.

The train is never a carriage, behind him, followed by seventy or eighty carriages, which has become the source of the development of the train.

The efficiency of a train must be higher than that of a carriage, and the distance between the horses must be freed, and at the same time a safe distance must be given, otherwise one after another, in case of collision problems, it will be a nightmare for the railway.

Zhao Xin is more familiar with, of course, the train of later generations, which is a train with at least more than ten cars, or even the largest, and one can even transport 5,000 tons of materials, which is simply mythical in the Northern Song Dynasty.

Now, under the premise that the rubber sub-projects have not reached a certain accumulation, even if Zhao Xin is very clear, the theory of the steam engine is to use steam to convert heat energy into steam thrust, and finally pull a train or other things to reciprocate rapidly.

However, it takes a long way to go from this theory to the result, in fact, the simplest natural phenomenon of water vapor pushing the kettle, has been discovered as early as the time when humans used flames, and this theory, to the steam engine, took thousands of years.

The most primitive steam engine appeared in the first century A.D., and that steam engine can only be called the prototype of the steam engine at best, and it is completely different from the later steam engine.

In the 17th century, the rudimentary steam engine was born, and it was not until more than 100 years later that Watt improved the steam engine and established the model basis for the modern steam engine, and then promoted this faster development.

With the Northern Song Dynasty's ability to study science and technology and the level of science and technology, it is very difficult to carry out all this, Zhao Xin is a graduate student in history, perhaps because of his hobby, he knows the longbow and some other simple things, but it is impossible for him to build a steam engine, he did not even make a basic model of the steam engine.

Therefore, Zhao Xin has not even turned on the operation of the steam engine, not even a head, this machine that may be epoch-making and has a huge influence on the Northern Song Dynasty may only be on the drawings, when the Dinghai Navy has developed to a certain extent, and even began to popularize scientific knowledge, it will be opened.

Road traffic is a very critical issue, and the problems that plague the railways no longer exist under the premise that the foundation has been laid for the Dinghai Navy's large-scale steel smelting and the construction of a large-scale smelting complex with an annual output of several million tons has been completed.

In order to solve the problem, Zhao Xin chose a more achievable result, using high-quality steel to make rails and carriages, and the power was handed over to the most easily available animal power, and under the combination of the two, the horse-drawn train has crossed the thousand-year history and become a reality.

Zhao Xin has carried out certain tests on the 37-kilometer route of the Ring Island Railway, mainly about endurance and replacement, and even turned this railway into a loop line for testing.

The island is not big, only 37 kilometers of the whole island, but the establishment of a ring line, to test how long the distance, how long the distance can be tested, which is also a method that Zhao Xin heard about the railway test in later generations.

The locomotive that has just been born, to test its reliability, of course, can not be carried out on the real railway, then the loop line has become the only option, relying on various environments to build the loop, can be 5,000 kilometers, 10,000 kilometers, or even 100,000 kilometers of destructive tests, in order to test this limit.

According to the current experience of the round-the-island railway, 37 kilometers is still too little, generally speaking, a horse on the horse-drawn railway, pulling a full load of heavy carriages, 37 kilometers will not consume all the strength.

However, the 15-ton carriage is still quite heavy, and when running at high speed, there are already signs of slowing down.

The conventions of the Northern Song Dynasty are not to mention tests, and they are roughly estimated to be very few, but Zhao Xin is different, industrialization brings rigor, and it is extremely rigorous.

A thing that is not rigorous, when placed in industrialization, will be a nightmare, with the help of a complete round-the-island railway, it will be able to test the limits of most of the horse-pulling.

For this reason, several horses were even scrapped and a carriage was overturned, leaving a track unable to run for at least three days.

This is already a very big price for the Dingjun, which has a very fast pace of development, but these tests have finally proved to be necessary, because it tests the limits of the horse-drawn train.