Looking at the final data summary sent by Qian Kun, Wen Yi was happy and emotional, and the vaccination work was finally completed.

In a year and a half, more than 1.8 million people have been vaccinated, which is too inefficient.

If you think about vaccinating a billion people a year in your previous life, or two shots per person, there is simply no way to make a comparison.

But anyway, it's done.

Then Wen Yi picked up another report and looked at it, which was the population data provided by the Ministry of Households.

The total population of the Tang Kingdom has reached more than 2.17 million, which is absolutely very gratifying. However, the population explosion does not mean that the hard power of the Tang State has increased, but has decreased.

Isn't it weird? As the population increases, why does the combat effectiveness become weaker?

It depends on the demographic makeup.

In the past four years, the Tang Kingdom has increased its population by nearly one million, of which the majority of children and girls have been captured and purchased from the Japanese slave islands, Funan, and the Nanyang Islands, with the number exceeding 350,000.

The second is the number of new births, and the increase in the number of women and the improvement of medical conditions have led to a sharp increase in the number of newborns, an increase of more than 400,000 in three years.

The 800,000 new women and children cannot be transformed into combat effectiveness, but will have to consume more resources to feed them.

Fortunately, Tang Guo is strong, otherwise Wen Yi would have to worry about how to feed them. That's why the population has increased, and the national strength of the Tang State has weakened.

Correspondingly, the potential of the Tang State has skyrocketed. As long as they can be fed, the hard power will multiply several times in more than ten years.

Relatively speaking, the number of people who migrated from the Central Plains in the past four years was not large, less than 200,000.

There are many reasons, there are two main ones, one is that countries are also aware of Tang's actions and have strengthened control.

Second, in recent years, the overall situation in the world has tended to be peaceful. The Qin State was recuperating, and the Yan State had also slightly reduced the oppression of the people under the auspices of Murong Ke.

People are like this, as long as they can live, they are rarely willing to leave their homeland, which makes it more difficult for the Tang State to absorb displaced people.

However, Wen Yi was very satisfied with this increase in numbers, and continued to encourage childbearing, asking the army and caravans to capture and buy more women and children back.

The next one is the museum's recital.,In fact, this recital is to make a show.,The situation here Wen Yi knows very well.。

In the past two years, the museum has not made any inventions that shocked the world, and it is mainly doing two things: first, to train students; Second, engage in basic research.

Students represent the future, and the foundation determines how far the sciences can go.

The technology that Wenyi came up with seems to have changed the world, but most of them have directly built a pavilion in the air, which does not help the entire science system much.

The basic research that the museum is doing now is laying the foundation for science and engineering disciplines. When the foundation is laid, scientists will be able to make countless inventions on top of it.

However, the trend of emphasizing literature over reason is not so easy to reverse, and many people have opinions about the museum, thinking that it is a waste of national strength.

Wen Yi can only use his prestige to suppress these opposing voices and provide the best scientific research environment for the museum.

But they didn't have nothing to do, such as the invention of thermometers and pumping machines. These two inventions also gag the mouths of many people, making it difficult for them to belittle the museum.

Needless to say, the role of the thermometer is directly related to human life.

The role of the pumping machine is also very large, and it can be used in agriculture...... Of course, now the steam engine is still a valuable item and the people can't afford it.

But the salt pan can be used on the other side, and the biggest problem restricting the production of dried salt is how to get seawater into the salt pan, after all, the position of the salt pan is higher than the sea level.

Before, it was borrowed from animal power to drive the overturned car to lift water, and the efficiency was touching.

With the qualitative improvement of the efficiency of the pumping machine, the uninterrupted turnover of the salt field has been realized, and the salt output has increased several times.

Pumping machines can transport seawater farther away, and Yancheng has cultivated more salt pans away from the sea, further increasing salt production.

Now Wen Yi is worried not that there is not enough salt to eat, but that there is too much to eat. After all, the total population is so small now, and the consumption of salt is far less than that in previous lives.

But one thing is for sure, when he unifies the world, he will be able to push the price of salt to a record low, so that all people can eat salt.

……

Relatively speaking, the research progress of the steam engine is not very large, and the power control problem has not been solved, and the practical steam ship and train can only stay in the imagination for the time being.

However, this does not mean that the steam engine is not practical, not to mention the pumping machine, and the mine is very dependent on the steam engine.

The next book is from the Ministry of Industry, which focuses on the role of the steam engine.

This book mainly reports on the production of steel, which reached 1,600 tons per year.

Knowing that there were a large number of metal deposits in the Nanyang Islands and that many of them were open-pit, Zhang Hong trained thousands of explorers to explore the Nanyang islands one by one.

Mines were established every time they were found, and slaves were captured for mining.

The steam engine has also been put into the mining industry, and its main role is two, one is the pumping mentioned above.

The second role is transportation. The construction of wooden tracks on the ground and the attachment of the steam engine to a towed minecart greatly improved the efficiency of transportation.

All these factors combined, and the steel output of Tang has grown by leaps and bounds year after year. Moreover, many mines have just been put into production, and the production capacity has not been fully released.

The next few years were a period of explosion in steel production.

Wen Yi roughly estimated that it would be no problem to stabilize at 5,000 tons after three or five years.

This output was not even as good as a small workshop in the previous life, but in this era it is the best in the world, more than several times the sum of other countries.

With the increase in steel production, many things that were not able to be done before can be tried.

For example, ironclad ships...... Of course, this will have to wait until a breakthrough in the supporting technology of the steam engine.

Well, it is not enough for an ironclad ship to have a steam engine, and the requirements for deck steel are also very high. It must be corrosion-resistant, otherwise the boat will corrode after not staying in the water for a few days.

But this is difficult to help Wen Yi, as a person in the smelting industry, if you don't know the formula of two corrosion-resistant steels, you are embarrassed to go out.

Restricted by production conditions, the kind of high-quality in the previous life can't be made, and the low-profile version is still fine.

……

Because it is the end of the year, these twists and turns are basically the summary reports of various departments, and Wen Yi has a three-dimensional understanding of the overall situation of the country after reading it.

After flipping through the folds, he thought it should be gone, but when he looked down, he found that there was still a stack of them next to him.

I can't help but wonder a little in my heart, the number of recitals today is wrong, why are there so many more? Could something have gone wrong?

No, if something happens, there must be a secret letter sent by the Wei Division.

He picked up the first book and found that it was still written by Xue Dayuan, which was even more strange. When I opened it and saw the contents inside, I couldn't help but frown.