In the morning, Yuwen Wen, who had returned from Sanchao, changed into casual clothes and turned to the bedroom. He saw that Chen Gang was dressing in front of the mirror, so he sat aside, drinking tea and chatting with the other party.

The sun shines in front of the window, and a bright halo covers Chen, which makes the youthful and energetic beauty more and more charming. Yuwen Wen looked at Chen as if he was enjoying a work of art.

The beauty that swayed in front of him last night, now I feel that I can’t even see it.

The young and beautiful Chen, like other beauties, satisfies all Yuwen Wen's fantasy and the ** derived from these fantasies, so he doesn't feel that there is a need for adding people in his harem. It's enough to have Chen, the "closed beauties".

After finishing his makeup, Chen wore a male cicada on his waist. This is the meaning of asking for a child. He prayed that God would bless his husband to blossom and bear fruit after rain and dew, and give birth to a boy.

Chen has given birth to children for Yuwen Wen, but he is still very young, so he still has many opportunities for childbirth, but Yuwen Wen doesn't care about this.

The medical level is limited these days, and pregnant women can be said to be wandering in front of the gates of hell every time they give birth. Therefore, Yuwen Wen, who has many children and many girls, has the mentality of letting go. If you get pregnant, you will pray for a safe delivery. It doesn’t matter if you can’t get pregnant.

Seeing that Yuwen Wen, who came back from Sanchao, had a spring breeze on his face, he asked what good news was. Yuwen Wen looked at Yi Nan cicada on Chen's waist and smiled and said, "How can you be unhappy when you are prosperous?"

Chen knew that Yuwen Wen was not talking about family affairs, and asked again: "Is it because the number of households in the world has been counted?"

"Well, the company reported today that the number of households in the world is more than 9.6 million, nearly 10 million."

Chen Wenyan was a little surprised and said, "Oh, if you count on one household and five, plus there will inevitably be hidden households, then the number of people in the world will probably exceed 50 million?"

"Yes." Yuwen Wen nodded with a smile, "Fifty million, half million."

‘That’s really amazing!’ Chen said sincerely that although she didn’t know what the population of 50 million (half million) is, she thought the number was very large, so it would be amazing.

Yuwen Wen nodded, but was very calm: "Yes, but it's too early to say too much."

He knew that Chen didn't know much about the population, so he gave two examples: "The "Han Shu Geography" records that when the former Han Dynasty was at its peak, the number of households in the world was 12.23 million, and the number of households was 59.59 million."

"The Book of the Later Han Dynasty records: In the third year of Yongshou, Emperor Huan had a household count of more than 1,000 orders and more than 600,000, and his mouth count was more than 56,400,000."

"In other words, the number of households in the dynasty is nearly ten million, but it is just approaching the level of Emperor Huan of the Later Han Dynasty. You must know that it happened more than 500 years ago."

Chen still felt it was amazing: "That's all the level of 50 million people. According to what Erlang often said, these are all the orders of magnitude. The world has been in peace for more than 20 years, and the number of words is close to the peak number of the Later Hankou number. It's amazing!"

‘Great? This is just a little higher than the peak of the Sui Dynasty...’

Yuwen Wen thought so, but he didn't say it out.

According to the history he knew, in history, in the fifth year of the Sui Dynasty, the number of households in the world (Sui Dynasty) was 8.9 million, which was calculated based on one household and five.

Considering the hidden households that were not included in the statistics, in the fifth year of Daye, the population of the Sui Dynasty steadily exceeded 50 million.

The fifth year of Daye in history was 609 AD; if the "now" is calculated in the AD, it is 617 AD, it can be said to be the same time period.

There are 8.9 million households and 9.6 million households, the number is similar (no hidden households are considered). Considering that this "timeline" has lasted for more than ten years since the second year of the Elephant, the population can be similar to the "history period" (slightly higher), which is already a good result.

The war caused a large loss of population and reduced the population base. Therefore, even if the world was peaceful after the Chen Dynasty, the natural growth rate alone would not increase faster than the "historical period".

However, since the first year of Mingde, the continuous decline in grain prices and cloth prices, coupled with Yuwen Wen's intentional use of the economic soft knife to cut his flesh, has led to large-scale fugitives in many manors.

These fugitives were originally hidden households who did not consider their household registration in the government, but because of economic reasons, they escaped by escape and gathered in areas with developed industry and commerce, made a living by working, and registered their household registration in the government.

The "abandoning darkness and turning to light" in hidden households has become registered household registration, which is one of the main reasons for the rapid increase in population (on the book).

The total reasons make the number of households in Zhou Guo now slightly exceed the "historical level in the same period".

And just this year, the Sui Dynasty collapsed and the world was in chaos.

Seven or eight years later, when Li Tang destroyed all the heroes and unified the world, the number of households in the world counted during the Wude period was only 2 million.

Of course, there must be a large number of people who have become hidden residents without statistics. However, just in terms of the numbers on the books, the world was in chaos at the end of the Sui Dynasty, resulting in three-quarters of the population in the Central Plains being reduced.

The population of the Central Plains lasted more than a hundred years since the Wude period. By the Kaiyuan period of Emperor Xuanzong of Tang Dynasty, the number of households on the books (excluding hidden households) exceeded the level of the fifth year of Sui Dynasty.

This year is a "sensitive" time point, and Yuwen Wen was quite moved by this. He cannot let history repeat itself, so he is learning from history all the time.

There are nearly 10 million households in the world, which means rich human resources and strong national strength based on this.

With advanced technology, as long as the Zhou State does not have civil strife and the ruling people do not act indiscriminately, then for neighboring countries, there will be no other choice except kneeling down and singing conquest in the future.

However, the number of ten million households also represents pressure.

The world is peaceful, and the war is in storage, and there is no major natural disaster. The people live and work in peace, the court has developed water conservancy and stable grain output, which means the population has soared.

The population of the Tang Dynasty ranged from 2 million households during the Wude period to about 13 million households during the peak period (Daibao period), with a span of about 120 years, and the population expanded to six times its original size.

So, starting next year, in 120 years, the population of the Central Plains will expand to six times, which is 60 million households. According to the number of households and five, it will be 300 million.

At that time, if agricultural technology (fertilizer) had not been made breakthroughs, would so many people be raised with the land of the Central Plains?

Yuwen Wen vaguely remembered that the population in the late Ming Dynasty exceeded 100 million, and that "to date" was about a thousand years.

The population was close to 400 million in the late Qing Dynasty, but the situation was special (high-quality corn and sweet potatoes were widely popularized on a large scale). We will not compare it for the time being.

From the early Tang Dynasty to the late Ming Dynasty, the land that was reclaimed over a thousand years only supported more than 100 million people. Of course, this did not include the introduction of corn and sweet potatoes.

Now, it only takes 120 years, and there are no military disasters or major natural disasters during this period. In theory, the population of the Central Plains can increase to 300 million.

Even with corn, sweet potatoes are popularized in advance (the variety is worrying), and steam engines and cheap iron tools can be reclaimed in one hundred years to support 300 million people?

Hope is slim.

Moreover, Yuwen Wen felt that there was no need to wait for the population to reach 300 million. As long as it approached 100 million, that is, when the number of households was 20 million, the contradiction between the large population and the small land was highly likely to reach the limit.

Even with steam engines and various new tools, the growth rate of cultivated land area is like this, and it is impossible to make a big breakthrough in grain yield per mu. In addition, the corn returned from the Americas is not very good, the yield is low, and sweet potatoes are probably not much better, so it is difficult to increase grain yield significantly.

When the rate of population growth far exceeds the rate of land reclamation and the rate of food growth, big problems arise.

So we must prepare for the future, immigrate to the south, Liaodong, Guangdong and Guangxi, and then continue to develop Jinghu and other areas to increase grain production and resettle an increasing population. This is what Yuwen Wen has been doing.

We also made plans overseas in advance, and we have a place to settle down in Southeast Asia, Australia, and America.

He thought his layout had given enough "surplus", but today there was a report from the Ministry of Justice. After confirming the number of households in the world, he suddenly felt that he could not rest assured.

The larger the population base, the greater the annual population growth. What will be an amazing number if it accumulates?

When Yuwen Wen thought of this, he asked Chen to bring paper and pen, and he wanted to try to solve a calculation problem.
Chapter completed!