In the primitive era, the vast majority of people became fathers and mothers at the age of thirteen or fourteen, and giving birth to offspring too early would lead to the reduction of the life expectancy of primitive people, which was actually the reason why Su Yan raised the adult standards of the people.

The Xiaohua Xiaoyue sisters wanted to give birth to offspring for Su Yan early, and Su Yan also said in the knowledge of the two that they could not have children too early, but the two didn't care so much, they just wanted to give birth to children for Su Yan as soon as possible.

It is not too late for modern people to give birth to children at the age of thirty, Su Yan has never wanted to let Sister Xiaohua Xiaoyue give birth to children for herself because of the influence of the memories of her previous life, plus those reasons.

Because the Tiger Witch and the Snake Witch passed away one after another, Su Yan thought about it, and the martial arts of the Xiaohua Xiaoyue sisters had reached a certain level, and breaking the body and giving birth to children would not have much impact on the future martial arts entry, Su Yan finally agreed to have children with the Xiaohua Xiaoyue sisters.

Although cultivating martial arts cannot be immortal, there is no problem in living a hundred years old, even in this primitive era.

When Su Yan said to Sister Xiaohua Xiaoyue, "Let's have a baby", Sister Xiaohua Xiaoyue was excited and wanted to cry, watching her peers give birth to offspring early and become parents, Sister Xiaohua Xiaoyue couldn't feel it at all, but having a child is not something that can be done by one person, Su Yan is unwilling, and the two of them have no choice, and now their brother and husband finally agreed.

However, having a child is not something that can be born if you want to, anyway, this year, the Xiaohua Xiaoyue sisters are not pregnant, and the cultivation of martial arts has no effect on the birth of children, if you want to make the Xiaohua Xiaoyue sisters pregnant, it depends on luck, Su Yan guessed that her own child would be born in three years at most.

……

Two years ago, the total population of the Dragon Tribe was just over 5,000, and two years have passed, and as of winter, the total population of the Dragon Tribe has reached more than 8,400 people, counting the clansmen who are about to reach adulthood at the beginning of the year, the adult male clansmen of the Dragon Tribe have exceeded 1,000, reaching 1,076 people, and the adult female clansmen are more than 2,000, reaching 2,104 people.

Excluding the pregnant female tribesmen, the dragon tribe can use more than two thousand adult laborers, and with so many laborers, any big project can be completed quickly.

Of course, the largest number of minors in the dragon tribe is still minors, the number of minors alone is more than 5,000, minors represent the future of the dragon tribe, and more and more clansmen will come of age every year in the future.

There is another thing that surprised Su Yan, this autumn was dry and rainless, and a mountain fire broke out on the left bank of the river, and the mountain fire struck west from the depths of the left bank of the river, and the area where the tree tribe lived was on the route of the mountain fire.

In order not to be swallowed by the fire, the people of the Tree Tribe could only hurriedly flee their homes and flee to the west, and when they fled, they were able to take very few things with them.

Su Yan once thought of attacking the Tree Tribe with fire, but Su Yan was afraid that the people of the Tree Tribe would be burned to death and make the two tribes turn against each other, so he gave up this idea, but he didn't expect a mountain fire to break out on the left bank of the river.

After seeing the mountain fire breaking out on the left bank of the river, Su Yan immediately sent Ying Yang to lead a team to find the Tree Tribe, and sent another invitation to the Tree Tribe, and finally the Tree tribe accepted the invitation and became the tenth clan of the Dragon Tribe, with the name not "Tree Clan", but "Wood Clan".

A few days later, a heavy rain slowly came to extinguish the fires that had been engulfing the jungle, and the left bank of the river had become a scorched earth, and it was unknown how many tribes had been forced to flee their homes like the Tree Tribes.

The power of nature is not comparable to manpower, and now the left bank of the river is still a scorched earth, and next year after the next year this land will be covered with green again, and in another ten years and decades, big trees will reappear on the land on the left bank of the river.

Only the people of the Mu clan looked at the left bank of the river and wept sadly, their former home had been completely engulfed by the fire, fortunately no one died in the fire, fortunately the Mu clan was able to join the dragon tribe and live a better life.

In two years, there is a lot more that has changed.

The planting area of crops continues to expand, and this year's planting area has exceeded 10,000 acres, which is still the land opened up by the source city, and there are still nearly 5,000 acres of land to be planted in Chicheng next year.

The yield of millet per mu has exceeded 100 catties, and 10,000 acres of land produces 500 tons of millet, and the people of the Dragon tribe have always had a bad habit of eating only meat.

The most important reason for the great strength of primitive people is to eat more meat, the total population of the Dragon Tribe has reached more than 8,400 people, so many people, if it is not fishing, there is not so much meat for the people of the Dragon Tribe to eat.

The beasts in the area of the half-day journey of Source City were almost captured by the hunting team, and the beasts probably knew that there was a powerful enemy here, and they fled from this dangerous area, and the efficiency of the hunting team to catch prey decreased every time, and it became more and more difficult for the tribesmen to eat animal meat.

Fortunately, the dragon tribe has been expanding the scale of domesticated animals, pigs, deer, sheep can be slaughtered when they are fine, the big head is still on the side of the golden chicken, a large number of golden chickens can provide a large number of eggs to the dragon tribe every day for one-third of the year, the people of the dragon tribe eat less animal meat, but eat eggs more frequently.

Eggs are scrambled and boiled, and various ways of eating flow out of the hands of the Xiaohua Satsuki sisters.

In addition, the people of the dragon tribe are also used to eating a lot of corn, they have been eating fish and animal meat, and they are easy to get tired of eating, and the dragon tribe has solved the problem of food, and the people naturally began to pursue delicious food, or let the food change its taste, and they accepted corn and rice.

Now Su Yan eats corn and rice with all kinds of talents every day, Wang Du does this, and the people of the Dragon Tribe also come, and their habits change unconsciously, but it will take years to completely change, and at the same time, the Dragon Tribe will continue to expand the scale of planting crops.

There is also the output of blister copper, two years ago a day can only smelt 65 catties of blister copper, a year down is about 13,000 catties, now the output of blister copper has increased again, a larger earth blast furnace was designed and built by Su Yan, a can smelt more blister copper, so that the daily output of blister copper more than 200 catties, a year can exceed 40,000 catties.

40,000 catties seems to be a relatively large number, but it is only 20 tons when converted into tons.

Su Yan has been trying to refine blister copper into pure copper, and then develop bronze, and currently stops at the step of refining pure copper from blister copper.