When the fire is blazing, the pure tin with a low melting point begins to melt first, and when the temperature reaches a certain height, the pure copper begins to melt, and in the large pottery, the tin and copper are blended together......

When the golden juice flowed out of a hole in the smelting furnace, Su Yan smiled.

This is the copper-tin alloy, this is the bronze, the pinnacle of the Bronze Age.

The other tribesmen in the smelting area did not know what copper-tin alloy or bronze was, and they could understand the impurities in blister copper to be expelled into pure copper, but they could not understand the addition of pure copper to other metals to become alloys, let alone the nature of bronze, all according to the king's orders.

The king laughed, which meant that they had succeeded, and Seri and the rest of the clan laughed as well.

"Very good, you have done a very good job, with this thing, our tribe will be unstoppable in this land, no tribe is the opponent of our tribe, I know your efforts and contributions, I will give you the reward you deserve."

"King! King! King! The people in the smelting area shouted for their words of appreciation and for the reward that the king was about to give them.

As for what the reward was, Su Yan had already thought about it, one was a woman, and the other was a bronze utensil, mainly copper pots, copper kitchen knives and other weapons.

Snake Li is the manager of the smelting area, Snake Li's contribution is undoubtedly the largest, he will receive three women, a variety of bronzes as a reward, and other clansmen can get one to three women and a different number of bronzes as rewards according to their contributions, but these clansmen usually work in the smelting area, and almost will not join in foreign wars, and the bronzes rewarded are mainly copper pots and copper kitchen knives.

The bronze had just been smelted, and Su Yan was in no hurry to cast any utensils with bronze, and directly cast the bronze into ingots, just like the blister copper, pure copper, and pure tin that had been stored before.

The melting point of bronze is only 800 degrees, which is much lower than that of blister copper and bronze, and when you need to use bronze, you can directly take out the bronze and add it to the melting for casting, which is very convenient.

Bronze has appeared, and the metal utensils created in the future will be bronze, but the smelting furnace is a little less, only two, and a few more smelting furnaces need to be built to ensure the output of pure copper, pure tin and bronze, the daily output of blister copper is about two hundred catties, and the daily output of bronze must also reach this level.

Finally, the pottery used as a pot or the stone knife as a kitchen knife can be eliminated, and replaced by a bronze cast copper pot and a copper kitchen knife, Su Yan's family first used these two things, just used for a few days, Xiaohua can't put down the copper pot and copper kitchen knife, the stone knife has been thrown far away, the pottery can not be thrown away, there is always a time to use, such as boiling herbs.

Bronze poured into the dragon tribe, mainly used as a living utensil, bronze casting weapons are not in a hurry for the time being, the copper weapons used now have a huge advantage over other tribes that use stone tools, weapon replacement is suspended, but a batch of exquisite copper knives and copper swords can be cast as a reward.

At the same time, Su Yan's reward to the clansmen in the smelting area is also being issued, it can be said that the clansmen in the smelting area and the high-level middle level of the dragon tribe are the first people to use bronze tools, but the women who have been rewarded make them a little disappointed, they are all short women.

Disappointment to disappointment, they still accepted it, for so long, the tribesmen were accustomed to these short women, women, who could give birth to children and work.

The bronze came to an end, and Su Yan devoted himself to the next thing, Yangcheng, located on the south bank of the Yellow River, could be completed this year, and all the clansmen moved into Yangcheng before the autumn, and even now there are a number of families living in Yangcheng, and the first batch of families to move in mainly choose the families of Yangcheng builders.

The household department first transferred personnel from the three cities to form the Yangcheng household department, so as to ensure the smooth completion of the migration of the clansmen, and the branches of several other departments in Yangcheng will also be established successively.

At present, the total population of the Dragon Tribe has reached more than 21,000 people, and the average number of people in a city is 5,000, even if the construction of Yangcheng is completed, the population of each city will exceed this standard, and the fifth city of the Dragon Tribe should also be prepared, and when the construction of Yangcheng is completed, that is, in the spring of next year, the fifth city will start construction.

Of course, the upper limit of the population of a city is not 5,000, and the average population of the three cities located on the north bank of the Yellow River has exceeded 6,000 people, and the actual population limit of each city is more than 10,000.

It's just that there are still a large area of vacant land in the city that has not built houses, and in the future, each city will be full of houses, which can live more than 10,000 people, and this 10,000 people is not the current form of population construction of the Dragon Tribe, and now the number of minors in the Dragon Tribe is one point six times the number of adult people, and this proportion will increase in the future.

Each city can build about 2,000 ordinary houses, with a courtyard, such a house can live in one family, that is, a city can accommodate 2,000 families, a family of five people on average, a city can reach 10,000 people.

The population is still as large as possible, and the dragon tribe will have more than two spouses and more than four children for a man in the future, and each spouse will have a child every two years as much as possible.

The dragon tribe can gain a large number of people by external warfare, and it can also gain a large number of people by its own natural development, especially the male tribe of the dragon tribe mainly comes from their own growth.

The fifth city of the Dragon Tribe, Su Yan decided to place it on the north side of the Yellow River and the south side of Zhucheng, preferably not far from the north bank of the Yellow River, so that a large amount of food could be obtained from the Yellow River, and the land distance between the fifth city and Zhucheng could not exceed a day's journey.

For a long time, the city of the dragon tribe will be built on both sides of the Yellow River or on both sides of the Yellow River tributaries, the river is the main source of water, you can also fish from the river as food, it is most convenient to build a city next to the river, if you build a city far away from the river, the water source can only be obtained by digging wells, and the food can only be planted, breeding, and hunting.

There are only a few conditions for the construction area of the fifth city, and the choice of the city lord is a problem, Su Yan thought about it carefully, and decided to transfer Shansong, who is currently serving as the city lord of the source city, to preside over the site selection, preparation, and construction of the fifth city.

In the few years since he became the lord of Source City, Yamamatsu has accumulated enough experience to be competent enough to build a city from scratch.

The first city source city was built by Su Yan himself, the second city was built by Zhi, Su Yan would guide every once in a while, and when it came to the third city, it was completely due to his own responsibility, in the construction process, Su Yan went very few times, and the same was true for the fourth city.