This time, Wei Weisi sent back a lot of things, in addition to the intelligence of Yan Guo's attack on Luoyang, there were also more than a dozen books and a wooden box that was not too big or small.

After reading Shen Jin's resume, Wen Yi had to sigh that the Jin Kingdom is really capable, and there are always heroes who stand up to turn the tide and renew the life of the Sima family.

In fact, this is the credit of Chinese civilization, it is a cradle, and the energy continues to incubate countless outstanding people.

Then he picked up a dozen other books and looked at them, and it would be more accurate to say that these were not books but population data, population data from countries around the world.

Knowing oneself and knowing one's opponent is invincible, and in this era, population is the most important resource, and knowing how many people the other side has is the only way to understand their war potential.

In recent years, the Central Plains Branch of the Weiwei Division has four main tasks: to explore the dynamics of various countries; Collect information about important people and make portraits of them; exploration of topography and landforms; Collect demographic information.

The first three are all easier to do, and the progress is very large, while the latter is the most difficult.

Taking the Eastern Jin Dynasty as an example, the imperial court itself could not conduct a census, and it was difficult to imagine how difficult it was to rely on the Weiwei Division.

But no matter how difficult it is, a little grinding can always have a rough figure.

According to data collected by the Wei Wei Division, the population of the Eastern Jin Dynasty ranged from 11 million to 15 million.

The reason for such a big fluctuation is mainly because there are too many hidden households.

In contrast, it is the minority regimes in the north that have more accurate population figures.

First, the monarchs of these regimes are more powerful and able to suppress the powerful and powerful under them. Second, in order to facilitate conscription, they conducted several censuses.

Taking Yan Kingdom as an example, Murong Jun conducted a census, with a total population of 2.5 million households and 10 million people.

The total population of Qin was four million, one million in Liang, and one million in Dai.

The combined population of the countries is 16 million.

In other words, the total population of the countries of the North and South is between 26 million and 30 million.

This figure was completely unexpected by Wen Yi, how could this be? He remembered that in his previous life, when the Jin Kingdom was first established, it had a population of 16 million.

After decades of turmoil, why is it increasing instead of decreasing? Could it be that history is wrong?

If he hadn't trusted Zhao Zhengzhi, he would definitely think that this data was fake.

If this data is true, there must be something wrong with the total population of the Western Jin Dynasty. And he can still think of what the problem is...... Hidden Household.

When the Western Jin Dynasty was established, the total population could not have been only 16 million, or even 30 million.

What Wen Yi didn't know was that his speculation was close to the real situation.

It is true that the history textbooks of the previous life wrote that the population of the Western Jin Dynasty was only 16 million when it was first established, but that was the data of the first year of Taikang.

In fact, in Taikang's three-year census, the population data has reached more than 24 million.

The "General History of the Chinese Population" and the "History of the Chinese Population" have obtained a data after research and reasoning, and the total population in the early Western Jin Dynasty was about 36 million.

In other words, the hidden households are as high as 12 million, which shows how strong the strength of the warrior clan is.

After decades of unrest, the total population fell to less than 30 million.

Some people may say, isn't that a lot lowered?

However, don't forget the population born in these decades, as well as the ethnic minorities who moved to the Central Plains.

According to the "General History of the Chinese Population" and the "Shixiang Zhi Jin Shu", the number of ethnic minorities at that time should have been more than four million.

Removing these four million, the total population of each country should be less than 25 million.

In other words, from the Yongjia Rebellion to the present, the total population has dropped by 10 million to 15 million in 60 years.

One can imagine how terrible the war was.

Looking at the total population data counted by the Wei Wei Division, Wen Yi's mood was a little heavy. I used to think that the million population of Tang Kingdom was very remarkable, but now I know that it is still far away.

Xie Daoyun guessed his thoughts and comforted: "Although our population is small, our national strength is stronger than theirs...... With a population of 1.3 million, the Murong clan still established a powerful Yan state. ”

"If you are willing to send troops, the forces of all sides will surely surrender and soon dominate the world."

Wen Yi shook his head and said, "What I'm worried about is not the problem of strength, but education. ”

"It's like this inkstone inkstone, pour it into a bowl, and it will stain all the bowl of water red. Pour it into the pond and it will be diluted out of sight. ”

"The new ideas of our Tang Kingdom are like red ink, and the total population of the world is like a pond...... If we are not large enough to jump into the pond, we will be diluted and invisible. ”

"So what we should do now is find a way to increase the population and expand the volume of red ink."

Xie Daoyun was silent for a moment and couldn't help but say, "We can send troops to annex some of the land first, so that the population expansion will be faster." ”

"The technology of making gunpowder is in our hands, and even if they know the firearms, they can't do anything."

"As for the loss of trade...... I don't think with the strength of our country, it doesn't matter if there is trade or not. ”

"And the Ministry of Commerce and the Department of Health have opened up the shipping route to Tianzhu, and our trade dependence on the Central Plains countries is not so great."

Wen Yi shook his head and said: "You still haven't grasped the crux of the problem, the problem now is that the 'red ink' is not red enough and pure enough, and there are a lot of impurities in it." ”

"A musket is made up of a lot of parts, and a problem with any one part will cause a problem with the gun."

"The new gun also has a run-in period, and it will be more comfortable to use after the run-in period, and the accuracy will reach the peak."

"The same is true of new ideas, which are formed by the combination of new customs, moral standards, laws, and so on."

"We have also reinterpreted the texts of the Hundred Schools of Thought according to new ideas...... These things are like the parts of a musket, and they need to be put together and run in well. ”

"Now is the run-in period...... In recent years, disputes caused by the conflict between old and new ideas have occurred frequently, and it is for this reason that disputes have occurred frequently. ”

"This is still the case in the Tang Kingdom, and rashly expanding power will only exacerbate this conflict and make things go in unpredictable directions."

"When our new ideas can be mellow and self-consistent, it is the time to send troops to fight the world."

"And now we are not idle, Luzon has successfully completed the initial construction, and Hainan Island is also steadily developing.

"The indoctrination of Funan is also going well, and the plan on the side of the Japanese slave country is also progressing steadily."

"The Ministry of Industry also discovered several gold, silver, copper, iron, and coal mines in Luzon, and also found the Spice Islands in the South Seas."

"Steady development, our strength is also becoming stronger rapidly, there is no need to risk entering the Central Plains now."

"What I want to do is to quickly end the troubled times with absolute superiority, and then steadily carry out indoctrination...... Instead of fighting the world, we have to fight wits and courage with the old elements. ”