In the 20th year of Qingli, if from about 5 years of Qingli, the establishment of the Dinghai Navy to the present, there is almost 15 years, if from the beginning of the establishment of the Dinghai Navy, there is also almost 10 years, ten years, for the Dinghai Navy, which has been developing steadily and developing on the basis of industrialization, the span of this development is very large.

In itself, when the Dinghai Navy was founded, it was an extremely terrible economy, with tens of millions of people in the Dinghai Navy and only a few million people in the Dinghai, but it created an output value that the Northern Song Dynasty could not reach, which was known as early as the establishment of the Dinghai Navy, but in the next 10 years, the Dinghai Navy gained enough territory and population, and the overall development speed was even more terrible.

The Dinghai Navy already has a steam engine, even if because of time, the steam engine has not penetrated into every corner of the entire country, from this point of view, the Dinghai Navy is not a fully developed industrial revolution.

However, the Navy has Zhao Xin's addition, and even recently, there is the emergence of the internal combustion engine, the development speed of the Navy, the production of the prototype is the most difficult, the improvement after the prototype is made, on the contrary, it is the easiest, to put it bluntly, in just 1 year, it has been changed 12 times, and at least 6 generations of products have appeared, this internal combustion engine, also accompanied by such a step-by-step improvement, has become gradually powerful and practical.

Not to mention anything else, running in Shenyang, as well as these motor vehicles, taxis, and buses in the entire Dinghai Navy, these are all changing the Dinghai Navy, not to mention the small machinery and large machinery that appear in the internal combustion engine, those fields that are not very suitable for the appearance of the steam engine, the internal combustion engine is very suitable.

The emergence of the industrial revolution is the innovation of power, and the internal combustion engine is to concentrate power and convenience, which has created a more developed industry.

If it's just this, Dingjun is just copying the road that Britain has walked during the Industrial Revolution, but isn't it, Dingjun not only has power facilities such as internal combustion engines and steam engines, but also Zhao Xin, a traverser.

Zhao Xin itself, has laid a foundation for the Ding Navy, trained a large number of skilled workers, and laid a foundation for development, a large number of engineering embodiment, so that the Ding Navy in labor cooperation, very good, now the power of the hardware added, for the promotion of the Navy is unprecedented, the development of the Navy is of course fast enough.

However, all of this is just a basic operation for Zhao Xin, even if he is not a professional, he has learned a lot over the years.

Among all the improvements, there is one thing that makes Zhao Xin feel the most happy, and that is the population.

In the 21st century, there is a suggestion that the industrial revolution is divided into 1.0, 2.0, and 3.0, in the 1.0 era, the first is the United Kingdom, and then the world's major powers follow up, and then, with the improvement of technology, especially the emergence of the revolutionary wave based on internal combustion engines and electricity, Germany, the United States, the last to come, and the gradual rise, they created the era of 2.0.

Then, after World War II, the Industrial Revolution 3.0, at this time, the only two superpowers in the world, namely the United States and the Soviet Union, the United Kingdom, Germany, the traditional industrial powers, did not give favors, because of the lack of population.

The United States has a population of 250 million and the total population of the Soviet Union is about the same, and they can start the Industrial Revolution 3.0.

But later, in the era of 4.0, the population doubled again, and without a population of more than 800 million, it was impossible to reach the level of 4.0, which is also the hostility of the United States towards China in later generations, especially when China surpassed Japan and became the world's second largest economy, this contradiction rose again.

The current Dinghai has not even completed and perfected 1.0, let alone 2.0 and 3.0, but because of this matter, Zhao Xin returned to the Northern Song Dynasty, and the first thing he paid attention to was the population.

In ancient China, the habit of having more children and more blessings, coupled with the intentional guidance of the Dinghai Navy, and even in order to increase fertility, he did not hesitate to give up the textile industry as a money-making project, all kinds of arrangements, plus a series of measures such as high welfare and high rewards, and finally after a stable few years, the harvest was fruitful, and in the 20th year of Qingli, the population of the Dinghai Navy climbed to 250 million.

This is a very terrible number, even if the Dinghai Navy has a huge population base in the Northern Song Dynasty, before counting, adding up the population of the Northern Song Dynasty, Liao, and the surrounding Japan and North Korea, that is, barely breaking through 150 million, plus the dead and wounded, it is equivalent to saying that in just a few years, the Dinghai Navy has a total of 100 million people.

This increase is quite high, that is to say, for 10 years, the population growth rate has been maintained almost every year at about 8%, this growth rate, in the future generations, it is unimaginable, 12 years to double, the population pressure will be very terrible.

Perhaps in the future, when the population swells to a certain extent, the population, land resources and food that need a certain degree of control will not grow indefinitely, and to a certain extent, it will increase to the limit, exceeding, it will be a nightmare, a disaster, but for the Dinghai Navy at present, this limit is far from coming.

In the 21st century, along with desertification and the continuous acquisition of land, the total amount of arable land in China is declining, but China's 9.6 million square kilometers of land can still support 1.3 billion people, or even more.

At present, the land controlled by the Dinghai Navy is much larger, not to mention the high latitudes, Siberia and Outer Mongolia, more than 8 million square kilometers of land, these lands, the land is relatively barren, the arable land area is even smaller, and now it is dominated by forests and animal husbandry, and is not used as the main output of food.

However, in the original land of China, part of the Northeast, as well as the land of Outer Mongolia and Central Asia, there are a lot of cultivated areas, not to mention Japan, Korea, and Southeast Asia, which is a huge region, especially Southeast Asia, which is almost all fertile soil, and the cultivated land area is very huge.

According to history, the population of this circle adds up to more than 2 billion, not to mention the land of the Americas, if calculated according to the average yield per mu of the Dinghai Navy, the population of the entire Dinghai Navy is 3 billion, so there is no need to worry about the population.

Under the premise of doubling in 12 years, it will take about 50 years to go from 300 million to 3 billion, about 10 times.

50 years, in history, this is a drop in the ocean, but for a person, it is almost a lifetime, 50 years later, under the guidance of Zhao Xin, what the development of the navy will become, then I don't know, but the great development of science and technology and society is inevitable, and there is a problem, that is, under the development of economy and society, the fertility rate is decreasing

This is not the current cognition, but the cognition of later generations, with the development of society, the ability of residents to earn money has improved, it is natural, the level of consumption has also improved, and the cost of raising a child is also increasing, in this case, will there be anyone, as now, born two in 3 years.

Even if it is not deliberately controlled, family planning is like this, people will not give birth if they take the initiative, maybe a family, two or three is considered normal, at most four or five, in this case, the fertility rate will drop sharply, from 8% to 5%, to 1%, or even below.

In short, even if it is a steady development, in 50 years, it will not develop to 3 billion, even if it is developed to 3 billion, then it is a big deal to expand, and the huge population is the confidence of the yellow race, when they expand, the whole earth, all the land suitable for development, are developed.

Population growth is a long process that eventually produces dividends, and unlike any other product, population growth, from an infant to a suitable, qualified labor force, takes a long time.

Even if it was the labor standard of the Northern Song Dynasty, it would take 15 years for 15 years old, and in fact, it would take at least 20 years for the navy.

Now, even from the establishment of the Dinghai Navy, the group of people who were born have not grown into a labor standard, let alone others, most of the new population of the Dinghai Navy appeared after the establishment of the Dinghai Navy, that is to say, the time for the Dinghai Navy to enjoy the demographic dividend is at least 10 years, or even 15 years later.

However, the current Dinghai Navy is far from developing to the era of industrialization 2.0 and 3.0, and even to a certain extent, under the premise that industrialization 1.0 is a little reluctant, these populations only represent the future of the Dinghai Navy.

Whether it is the expansion of the country, or the expansion of the sphere of influence in the future, the population is an unavoidable process, this is Zhao Xin, from the beginning of the control of the Dinghai Navy, has never spared no effort to obtain the root of the population, without enough population, industry can not develop, and even in the future, more and more huge industrial climbing plan, there is not enough population as a basis, can only be limited, become a flower in the mirror, the moon in the water.

Everything is okay, the huge production capacity of the navy, not to mention 250 million, even if it is several times more, it is enough to support, and the basic grain production, with the support of sufficient manpower and machinery, is no problem.

If it is said that before the design and manufacture of the internal combustion engine is completed, there is still a problem that the industry has crowded out too much population, and the agricultural population cannot keep up, so it is necessary to make trade-offs and tilts, but with the completion of the development of the internal combustion engine, everything is not a problem.

From the emergence of the internal combustion engine, the birth of a series of advanced machines such as tractors and harvesters, the labor efficiency has been improved tenfold or even a hundred times.

A tractor that is not too big, under the premise of having a plough, can reach 100, or even more people, or even dozens, hundreds of ploughing cattle to achieve the common effect, in the north, in the entire Liao region, is a large area of plains, suitable for large-scale development and mechanized cultivation under the premise, it may be possible for one person to plant 100 acres, or even more farmland.

In agriculture, we can use the minimum population to ensure sufficient grain production and devote more energy to industry.

The emergence of internal combustion engines and various agricultural equipment has made up for the last shortcomings of the Dinghai Navy, and the rapid development and even the possibility of following in the footsteps of the Soviet Union have completely solved the last hidden dangers, whether it is heavy industry or light industry, it can be rapidly developed, and at this moment, in the whole world, there is no country, a race, can be compared with China and the Han nationality, especially in this critical golden period.

At a time when there are high welfare benefits, a high operating social environment, and habits in a society that are not affected, the high fertility rate for a long time will be vividly displayed at this point in time.

Under the premise that the population base of the whole world does not exceed 500 million people, and China directly occupies half of it, the population growth of other countries and continents in the world will still follow the previous rate, and even slow down because of some disastrous impacts, China will usher in a period of population explosion.

Not to mention, such a population growth lasted for the 50s, under the premise that the current population of 250 million skyrocketed to 1 billion, and when China occupies 80% or even 90% of the world's population, and has the ability to transport people to the whole world, China's rise will be unstoppable.

is not only the leadership of technology, the leadership of weapons, but also the advantage of population, under such high-density covering, influence and absorption, maybe one or two hundred years later, other populations and races are only left in history and even myths, the ability to recall the past, this is what Zhao Xin wants to see, and it is also the root of his time traveling to this era.

Itself, the original idea, is just to ensure the independence of the Northern Song Dynasty, to ensure that the Northern Song Dynasty will not be bullied by the nomads, and the humiliation of Jingkang will not appear again, but by chance, the card system is powerful, and in addition to the series of talents encountered, it finally created the leapfrog development of the Ding Navy, and now, Zhao Xin is no longer pursuing low-level goals, after taking the land of Liao, and substantially controlling Inner and Outer Mongolia and Siberia, there is no foundation for the rise of Mongolia.

Even if there is, China, which has entered the era of thermal weapons in advance, even if it encounters Mongolia at its peak, not to mention that Mongolia is now just a prototype and has been divided and disintegrated, when the grassland on which the nomads live is already under the control of China, the nomads, the nightmare that has plagued many countries in Asia, will no longer exist.