At the beginning of the founding of the Great Xia Empire, the local population in the Central Region was included in slaves, which was only 200 million. After fifteen years, one star was a star, and the total population had reached one billion.

By the end of the eighty years, the population of this star's bloodline has reached 30 billion. In just 65 years, the population has increased by thirty times.

The growth of population is not just about material abundance. It also encourages childbirth. The population naturally grows rapidly, but not so fast.

The biggest reason is that the average population quality is the growth of the body, soul, just appearance, wisdom, labor and life span, which are the essence.

And the important factor in population growth is life span.

The longer the life span and the more vital life span, the longer the childbearing age lasts. According to the average quality of the people of the empire today, the average life span has exceeded four hundred years.

Except for the immortal species, such as elves or some non-human components, most of the remaining ones are not far from the people of the empire. When they are twenty years old and have an average life span of more than three hundred years, there will be at least two hundred and fifty years of active period in the middle.

In the past, when people reached 60, they were powerless. Now they are 260 years old and still have fertility. Under the abundant material conditions, the population of the empire soared, and it increased by thirty times in just 65 years.

Of course, with the improvement of the average population quality, fertility inevitably begins to decline.

Ying Yi knew this very well. The stronger the individual, the more limited the fertility is. This is the balance rule of nature of heaven and earth.

The weaker the more fertility you are, the stronger the fertility you are. The stronger the fertility you are, the weaker the fertility you are.

This can be clearly displayed on the data of each census of the empire.

At the beginning of the founding of the country, men and women at the peak of their vitality had no problem giving birth to nine in ten years. By the twenty years of the empire, the average fertility rate per unit time had been reduced by three times. By the eighty years of the empire, the average fertility rate per unit time had been reduced to ten times the initial time.

In the past, a couple could have nine babies in ten years. Now it will be extended to one hundred years. It takes an average of ten years to have one baby.

Fortunately, the childbearing period lasts longer, and on average, for every couple, there are still more newborns within the childbearing age.

The Empire's main star is the center of the Empire's economy, culture and politics. Women from all walks of life still want to marry the Empire's main star. In addition, the battles continue and the female captives who have been captured in the world have also fallen into the Empire's main star, which makes the Empire's main star an average of one male, at least seven or eight wives and concubines, and at most dozens.

This is also one of the reasons for the surge in population.

However, according to the budget of the Ministry of Civil Affairs, the growth rate of the population of the empire's main star will drop by 500 million from the 81st year. As the population quality continues to improve, the number of newborns will decrease, and will eventually fall to an average of 100 million to 200 million per year, and finally stabilize.

The key to stability is human potential. According to the research of Yuanqi Palace, any kind of creature, under the premise that the activity of Yuanqi is not limited, has a potential limit of 20. That is to say, the average quality of the people of the empire, no matter how the activity of Yuanqi in the world under the empire increases, will not exceed the number 20.

In other words, the average life span of creatures has a limit. The fertility rate is also a limit. Based on this limit, it is possible to calculate the stable range of future population growth of the empire.

Ying Yi understood very well.

Because he experienced this himself.

Even if the great characters are added, he will stop at 20 or no longer make progress before breaking through the shackles.

It is clearly the basic limitation of the rules of the universe. Unless it has a root and can break through the shackles of potential, it is natural to take 20 as the limit.

If both physical and spiritual data reach 20, the life span of a person will be stable and more than 1,200 years. According to the differences in their respective constitutions, the limit is 1,296 years, but as long as it is not a harm, the impact of congenital diseases will not be lower than 1,200 years.

This limit data is effective when placed on any intelligent creature. Even elves and dragons cannot exceed this limit.

This is the limit of the rules of the universe. It is impossible for a race that will live and die for the whole nation. This is a huge pressure on the universe and nature.

Therefore, only a very small number of people who have unique nature and nature can break through the shackles.

This is the so-called glimmer of hope.

The mainstream of the universe must be endless and endless reincarnation. In this way, the vitality and vitality of the universe can be maintained under the scale of the universe. If the mainstream only lives and does not die, the universe will eventually be a stagnant pool.

Ying Yi sometimes thinks of some myths and legends, the legendary quantitative disasters and killing disasters are probably also a kind of adjustment of the universe to its own vitality.

In those myths and legends, each race lives forever. When the number increases to a certain level, it will cause huge pressure on the universe itself. Therefore, there are numerous disasters and killing disasters.

Let them fight each other, kill each other artificially, and reduce the number of immortals. Let the mainstream of the universe restore the vitality process of the natural cycle of life and death, which is probably the essence of the killing disaster.

"For a creature, a life span of 1,200 or 300 years should be enough." Ying Yi smiled and said: "A hundred years of loess, many wisdoms will return to heaven and earth without being displayed. It is a pity. After a thousand years, wisdom will be promoted without putting pressure on the universe in nature. This is the beauty of Tao."

"Since ancient times, living beings have sought immortality and immortality. Even the emperor with great talent and strategy cannot escape this knot." Zi Niang snuggled up to Ying Yi: "The same is true for the people of the empire to develop to that level."

Ying Yi laughed: "Isn't it just right? Giving them a goal that can never be achieved and cannot be free from can make their wisdom do their best. This is a good thing for the empire itself."

Zi Niang whispered: "Your Majesty is immortal, but I will leave Your Majesty a thousand years later..."

Ying Yi sighed lightly and patted Zi Niang on the shoulder: "Don't think too much. You and I are only a hundred years old now, and it's still early to live forever."

Having said that, Ying Yi knew that Zi Niang was under pressure.

Ying Yi has roots, has broken through the shackles, and has long exceeded his life span. But Zi Niang did not. If this were the case, it would be fine. The key is that there is a concubine with the same roots in Ying Yi's inner palace. This caused considerable psychological pressure on Zi Niang, the emperor and empress.

In fact, not only Zi Niang, but other concubines also spoke the same thing when they were with Ying Yi.

But Ying Yi never gave a positive answer.
Chapter completed!