Dinghai is not a very large island, even now, among the coastal islands, it is relatively large, but the total area is only 300 square kilometers, that is, a radius of dozens of kilometers, the straight-line distance will not exceed 30 kilometers, and there is a mountain that occupies a considerable area of the entire island.

A 15-kilometer-long canal with an average surface width of about 90 meters, and an area of nearly 1.5 million square meters of river alone, is quite large, especially for islands like Dingjun.

Not only the area is large, the entire excavation of the earthwork is also quite huge, according to the average depth of 11 meters, the total number of cubes exceeds 18 million, which is of course not according to the area, the average area of the river reaches 90 meters, but the length at the bottom is 44 meters.

Not every ship is a super ship, even if it is the Kiel Canal, at ordinary times, navigable, it is just an ordinary merchant ship, with a depth of 11 meters, at a specific moment, you can pass a super battleship, you don't have to be the same width up and down.

Even if it is an upside-down trapezoid, the total number of cubic meters is close to 18 million, which is not a small project, but a very huge project.

According to the excavation of ordinary canals, the width of 20 meters and the depth of three or four meters are almost close to a 150-kilometer-long canal project, which can be more than ten times the length.

In the 11th century, it was not a small project, but a project to assist the Yellow River, which was disputed for decades, and did not start smoothly until the diversion of the Yellow River was completed.

There is no such problem in the navy, there is no need to consider so many aspects, such a project, when it is opened, it is not without controversy in the navy, when it is first proposed, the main question is whether it is necessary.

The depth of 11 meters, close to the width of 100 meters, for the Song people of this era, unheard of, Zhao Xin in the past time, has used the actual situation, to prove his vision, the main objection, is not in whether the canal to be built, but in whether to build such a large.

For example, under the premise that the Dinghai Navy has a large number of sea vessels, even if the largest sea vessels pass through it in a staggered manner, there is no need for such a large canal.

40 meters is enough, if you take into account that most of the sea ships are ordinary sea ships, then 25 meters to 30 meters is enough, which can meet the current needs, build a part, and it is enough.

It can't be said that their idea is wrong, they can think of using the current 30,000 material sea ships as the basis, so that two 30,000 material sea boats, opposite each other, 40 meters of canal is also completely fine, if you take into account the premise that more than 30,000 material sea ships are rare, 20 meters wide is fine.

According to the standard of ordinary canals, 20 meters wide and three or four meters deep, in this way, at least more than 9 percent of the project amount can be saved, and the difference of 10 times immediately makes this project completely different.

This statement is really true, if the Navy maintains its current state, there is no need to engage in such a big project, money is not the main problem, the key is time.

Dingjun is very rich now, if Zhao Xin is just a rich man, he can already be in the Daimyo's Mansion, and the annual profit exceeds tens of millions, but a Dingjun is a gold-swallowing beast, in just 2 years, a city that can accommodate 1.5 million people has been built, and there is even a large number of industries, such an investment is terrible.

Not to mention tens of millions, in the past two years, the investment of the Dinghai Navy has exceeded 300 million, it stands to reason that such an investment is irrational and easy to collapse, but with the help of industrial transformation, the Dinghai Navy not only has a huge output of various products, but also has a high profit margin, which has become a huge investment support.

But the most profitable, or the Dinghai currency such a currency, from the Daimyo Mansion began to appear, to the Dinghai Navy, along with the various products of the Dinghai Navy, circulated throughout the Northern Song Dynasty, the circulation is as high as 1 billion, not to mention the comparison of its own value, even if it is a coinage, it is a very terrible number, 10% of the coinage tax also has a profit of 100 million.

A Dinghai coin that looks very exquisite, the cost in the card system, that is, a few pennies, the price of a pound of iron is only a few pennies, stainless steel is of course more expensive than iron, and it is also more expensive than steel, but one is how big.

More than a hundred times the profit, not to mention the resources occupied by the card system, simply speaking, the value of 1 billion Guan Ding Sea Coins is not even 10 million.

Dinghai coins made huge profits for the Dinghai Navy, but it did not affect the economy of the entire Northern Song Dynasty at all, and even revitalized the economy of the Northern Song Dynasty to a certain extent.

The Northern Song Dynasty in this era, on the whole, was a shortage of money, which was very rare in the entire history of China, and the lack of enough currency would make money more valuable and make commercial activities impossible to carry out.

There is no general equivalent, and relying solely on the method of bartering is a very big blow to business, and some large-scale businesses cannot be traded.

The political leaders of the Northern Song Dynasty are also very aware of the problem of lack of copper money, and they have also thought of many methods, such as collecting and mining copper mines as much as possible, which is the most intuitive solution, but in the hinterland of China, there is no high-grade, huge output of copper, and in addition to the entire circle of influence of the Northern Song Dynasty, the currency of the Northern Song Dynasty is very popular.

The whole of East Asia, including the Liao Kingdom, Western Xia, Korea, Japan, and the countries of the Indochina Peninsula, they all used the currency of the Northern Song Dynasty, or imitated copper coins for production, and maritime merchants, in order to be able to trade normally in the Northern Song Dynasty, would also accumulate a large number of copper coins.

Such a thing, in the 21st century, or even the 20th century, is simply the biggest good thing, the national currency controls the finance of other countries, this is a good thing that falls from the sky, any simple action, may, make the other party's financial turmoil, even if it is gold and silver coins, you can also get a huge minting dividend.

In this era, the Northern Song Dynasty had coinage dividends, but relative to the lack of raw materials, the outflow of a large number of copper coins from the Northern Song Dynasty would have a vicious impact on the currency of the Northern Song Dynasty itself, making the currency even more insufficient.

This is a very critical problem, in order to solve the problem of this currency, under the premise of not having enough precious metals, it has to be ordered, iron money, silk, and even Jiaozi are alternate.

Iron money and silk are things that have a certain value, their appearance, there is a credit line, but more is the actual value, but, compared to copper money, they are easy to damage, silk needless to say, long-term use, its value will be greatly depreciated, iron money is good, but once encountered in a humid environment, it is easy to rust and break, and it is not a long-term use.

Through special printing, coupled with relatively small relationships, Jiaozi has the value of circulation.

From the point of view, Jiaozi is really advanced, it is the first banknote, the face value can be adjusted, for the merchants, easy to carry is the most important benefit, and at the same time for the Northern Song Dynasty, which has insufficient currency, there are positive objections.

Jiaozi originally appeared in Xishu, and through a long period of operation, a series of rules have been formed, and in a sense, he has acquired creditworthiness.

It is precisely because of this that the center began to print Jiaozi, which initially had a certain effect, but unfortunately in this era, even the high-ranking officials who are proficient in finance, they did not realize the importance of reserves, and there are no precious metals as reserves, and direct printing can get money, and when this policy was used by the Northern Song Dynasty court that was short of money, it became a terrible thing immediately.

The currency depreciated, and the Jiaozi flew sideways, from the original consistency to consistency, and gradually became less consistent, hundreds of texts, and finally turned into paper under the indiscriminate issuance.

The current Dinghai Navy does not have the credit of the central bank, and rashly entering the field of paper money will definitely produce huge problems, such as the problem of creditworthiness, which must be from a long time before it can gradually establish its prestige, and before the Dinghai Navy did not occupy the dominant power of the Northern Song Dynasty, paper money is just a thing that can be imagined.

Credit currency can't, metal currency, it's okay, with the hardness of stainless steel, it is much higher than the general magic weapon, smooth surface, silver flash, and non-rusty characteristics, these already have the basis of money, coupled with the high price of fine iron, which has become the basic point of judging him, in the stainless steel technology, before the large-scale leakage, this kind of thing as a currency is no problem.

Of course, Zhao Xin knew that if he issued currency indiscriminately, he would inevitably be punished in the future, but this technology was mastered by him independently, and he did not even study it in the steel mill.

Even if it is researched and can be mass-produced, Zhao Xin will not let the technology of stainless steel circulate on a large scale, and in the future, once there is a better alternative, or the credit of the Dinghai Navy is high, it will inevitably enter the field of paper money.

From later generations, Zhao Xin will certainly not make the mistakes of the Northern Song Dynasty, at the same time as the issuance, but also in the collection of currency, copper, precious metals are the scope of collection, in the future, when towards the ocean, located in Southeast Asia, as well as Japan's silver, will become a huge support.

After the Spring Festival, with the flow of people returning to their hometowns, the 600,000 people who came back are still in the training period, but digging a canal does not require any skills, or in other words, as long as a small number of people have certain skills, can measure and use tools, the rest is with the help of simple tools, just work hard.

Even more than 1,000 years ago, during the Spring and Autumn Period and the Warring States Period, canals could be dug in this era, of course, in this era, not to mention, the Ding Navy still has something that this era does not have, that is, cement, the bottom built with cement, compared with ordinary canals, it is much easier and not easy to be destroyed.

The combination of the two gave Zhao Xin strong support, and many opponents, after Zhao Xin came up with a theory, there was no problem with money and people, thinking that Zhao Xin just wanted to make a project to make people less idle, so they didn't say anything.

This concept was also put forward by Zhao Xin, that is, when they arrived at the Dinghai Navy, they found that relief could still be played like this.

Before the Northern Song Dynasty, the relief for the victims was more to ensure that these victims survived. Because it is not possible to give these people more and more caloric food, most of them are to maintain their basic life, and the less movement the better, so that relief supplies can be saved.

It was Zhao Xin who showed them that in times of disaster, with a small amount of funds and materials, they could push the victims to build some projects with huge investment in the form of work-for-relief, which may be a little higher, but the gain is also high.

The people who poured in at this time were not disaster victims, they were there to make money, the situation before the Dinghai Navy had already been shown, and the role of manpower in the Dinghai Navy was very large, and these people, even if they had no effect in a short period of time, they had to stay.

Zhao Xin is in the navy, it is a word, the decision of the canal, he doesn't even need to ask for the opinions of the below, but he thinks very long-term, so he is arbitrary, it is not impossible, but it will affect the judgment of the below.

Zhao Xin has a vision beyond this era, he is just a person, he does not have three heads and six arms, and he does not have the means to incarnate hundreds of millions of immortals, no matter how powerful his knowledge is, there is only one person, even if he comes from the consulting era of the 21st century, he is not an all-rounder, he can't consider every place more perfectly.

For example, the huge accident that occurred in the ironworks in the past was in a radical state, ignoring the problem of safe production, which eventually caused problems and caused huge losses.

I am not afraid of simple losses, but because of the delayed time, in order to make up for this loss, Zhao Xin had to leave early, and at the same time, it took a long time to deal with the sequelae of this.

This is just a blast furnace of a steel plant, what about the future, more projects, more dangerous things? Now, with a population of more than 1 million in the navy, Zhao Xin can still do everything and deal with every aspect of the problem, but what about the future?

Zhao Xin's future development will definitely not be limited to the Dinghai Navy, the huge ocean, the seven continents, even the entire islands off the coast of China, and Southeast Asia, this is also a huge territory, in this case, can he still cover everything.

Zhao Xin's control of the Dinghai Navy changed after the accident at the steel plant, and even if it was an arbitrary project, he would solicit opinions as much as possible.

What Zhao Xin wants his subordinates to have, not the kind of obedient echo worms, he hopes that his subordinates will have the ability to think independently, and will analyze them according to specific problems, in the future, a large number of islands will be included in the scope of influence of the Dinghai Navy, maybe a smaller island, there is no need for such a unique talent, but similar to Taiwan, Hainan Island, the islands around Japan, and the islands around North Korea, someone must dominate everything, especially under the premise that Zhao Xin can't take a sea boat to guide.