The result of the race was self-explanatory, and the two men came out on top, and what surprised them even more was that when the two men were about to win, the two small wooden plows pulled by the two men left indelible scars on the flat ground with even more surprising speed. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

It's just that the ditch reclaimed by the small wooden plough is not qualified, it is very narrow, and it cannot meet the requirements of the two-foot spacing stipulated by Xia Cheng and the three ridges for the wheel base, but the speed is several times faster than that of the man.

While those sweating profusely went to the wine shop to enjoy their food, Yu Qian'er began the exchange of these farm tools.

"This is a farming tool, and my brother was not allowed to exchange it for copper, because it can be made into weapons."

The itchy people next to him shouted: "No, Xia Cheng and E Cheng are brothers, and they will never fight each other, Ji Xia and E Yue have already sworn an oath." ”

Yu Qian'er smiled: "In the past, when our tribe did not have bows and arrows, we could only look for the thinnest deer in the herd. At that time, even if we didn't swear not to kill the fastest deer inside, we couldn't kill it. But when we have a bow and arrow, even if we swear an oath, we can still kill the fastest deer in it, and whether the fastest deer will become our food depends only on whether we keep the oath. ”

The people next to him couldn't refute it, some of them were not used to the way these people in Xia Cheng spoke, and they were a little embarrassed.

"However, my brother trusts the oath with E-Yue, and he said that since it is a brotherly alliance, he also hopes that you can grow more corn and not starve, because our tribe knows what it is like to starve in the past. You planted it so early that you may have forgotten the taste of catching maggots and eating grasshoppers from wood, right? ”

"How can we be, we also suffered disasters when we migrated, and it is okay for those who have more corn, but those who have less will also eat these things, and one day we have stripped off the bark of half of the elm trees in half the mountain......

Some people recalled many years ago with palpitations, and couldn't help but feel a little sick, and the fishy mucus of elm bark seemed to be pouring out of their stomachs after all these years.

"In that case, let's say okay, these can only be farm tools. If it is stained with the blood of a brother in the future, then it will ......"

The people around shouted one after another: "We swear to heaven and earth, if that happens, let us live the days of eating elm bark all day long!" ”

This is a very heavy oath in the hearts of the people of Echeng, and after Yu Qian'er swore an oath with the other party, he exchanged these farm tools.

She only took half of it, because she had been in charge of the market for so long and found something very interesting, the less things you have, the more things you get. The remaining half is going to be changed later, anyway, there is still a long time before the spring corn is planted, and my brother also said that it will not be shipped back until winter.

Because of the recent harvest, the fact that the newly plundered slaves of Eyue have not yet returned, and the fact that Yu Qian'er in the wine shop "inadvertently" mentioned that the tribe had starved the city to death by eating acorns last year, these people had an extra way to treat the slaves: they could let those slaves eat acorns, and it was said that after soaking them in lime water, they would not easily rise to death.

Because of the scarcity of the two wooden ploughs, six hundred catties of corn were exchanged, and there were enough slaves to pull the wooden ploughs, and there was enough corn to exchange. And the rest of the bronze farm tools, each of which was about fifty or sixty pounds of corn, were all newly harvested.

Yu Qian'er didn't know what the standard of changing things was, but Chen Jian told her that there was a very simple way, that is, to calculate the average working time.

More than 100 bronze farm tools require twenty or thirty people to mine, and ten people to burn charcoal, blow wind, and smelt for ten days. And copper ore is buried in the ground, and it makes no sense when no one excavates it, so since it has been decided to exchange, then the issue of copper ore will not be considered for the time being, and only the labor of people will be considered.

After estimating, these more than 100 bronze farm tools require an average of 60 days of labor for a person, which is exactly a harvest cycle, and a person can cultivate more than ten acres of land at most, which can harvest 2,000 catties of grain.

2,000 catties and 10,000 catties in exchange, no matter how you count them, they are all earned, and they have increased fivefold.

Yu Qian'er knew that it was cost-effective to change it like this, but she sometimes thought that what her brother said didn't seem to be entirely right, because she didn't count the things in her head, if her brother didn't figure out how to smelt it, then she wouldn't be able to change it...... It's just that the things that my brother thought of, how much food should be worth it?

It's just a little distressed for a moment, and she doesn't think about it anymore, she thinks that her brother can't understand it, the things in her head can't be seen or touched, and it's not suitable to use corn as a measure.

"This is what my brother thinks, of course he can not think about these things, but if someone else comes up with it in the future, when he gives them a reward, how much should he calculate? Should the things that come up in my head be counted in the average working hours that my brother said? Oops, it's hard to think about......"

She tugged at her braids a little irritably, but at last she was happy to see the corn that had been brought in and stacked together, and her eyes were bent into crescents to look at the number counted on the bark, and she had endless calculations in her heart......

Three hundred miles away in Xia Cheng, Jian Chen didn't know the distress that his words had caused to his sister, and he still had his own troubles.

Autumn planting is over, and it looks like it's going to rain, and soon the wheat will sprout.

However, there is still much to be done in the city, and spring planting and autumn harvest are the most important things, and apart from the time for war, there is not much free population and time.

More than half of the things he had planned a year ago were still unfinished, the most important of which was to build the road from the mine to the Grass River.

Now all those ores are carried by slaves, and they harvest their own cattle, horses and carts, but they can't turn these into efficiency.

A road of thirty or forty miles is too troublesome to build, and it may take the entire city to travel talents, which is why he considered exporting bronze farm tools, but if it is used by his own tribe, this road can be repaired or not, but since it is ready for mass production, it must be repaired.

There was news from the mine that more than 30 slaves had collapsed and killed in the past month, and the guards of the mine had come up with a way to dig smaller holes and let the children of those slaves go down and carry the ore.

The smaller the entrance to the cave, the less likely it was to collapse, and even the people of several tribes hoped that they would be able to exchange more than 100 boys of eleven or twelve-year-old in bulk when they were engaged in slave trade with those tribes in the northeast.

Jian Chen had already started the slave trade with other tribes, and knowing that this was the rule of this era, he didn't think about whether it was inhumane to use children as slaves, but was thinking about how inefficient it was.

Compared with the bad news from the mines, the people who smelted the bronze brought some good news, a news that was obtained by chance, through the accumulation of experience in labor.

Chen Jian told those who smelted bronze according to Jin Youliuqi's statement, but the smelted bronze was very brittle.

They hadn't seen any other bronze, so they thought that Jian Chen's words must have been guided by the ancestors again, although they were brittle and easy to break, but they were very sharp and sharp.

The smelting of copper and tin is no longer a problem for those craftsmen who have been working for more than half a year, and it is even possible to estimate the amount of charcoal needed by looking at the ore.

However, the process of melting copper and tin into alloys is still being explored, and it is a very long process that requires very experienced people to judge by their eyes.

The method of smelting bronze is to use a small crucible, which is filled with copper and tin according to the proportion, and then charcoal is blown and burned with a leather lob, so that when the "furnace is perfect", the alloy can be melted and cast.

However, the amount of charcoal is a very important measure, sometimes even if a sufficient amount is added, there is a problem with the blast during smelting, which will cause the alloy to not be completely melted, and the fluidity is very low, so there is no way to melt directly.

At this time, these semi-melted alloys need to be removed and melted as tin when they are refilled.

This time by accident here, by chance, a clansman who has been working for a short time mistakenly took these bronze scraps that were not completely melted and were ready to be melted and cast into the bronze mirror as tin, and added them according to the proportion calculated by the copper official.

After it began to melt, a problem was found when the number was counted, but a new batch of bronzes had been melted and cast, just because the copper-tin alloy was regarded as tin, so the copper-tin ratio of this batch of weapons was much lower than the statement given by Chen Jian that the gold has six qi!

The newcomer knew that he had made a mistake, and the bronze official took those spears and scolded them for a long time, saying that the time of the five people for several hours had been in vain, and the angry bronze official smashed those spears on the stones.

The result surprised these people, these bronzes, which did not follow the copper-tin ratio provided by Chen Jian, were tougher than the previous ones, and were not as brittle as before.

This kind of incidental discovery in the course of work surprised the copper official. After smelting today's quota according to the requirements stipulated by the city, he did not stop work immediately, but used his free time to try again, and found that the smelted was the same as the previous batch that went wrong, and it was not so brittle.

"Could it be that Ji Xia is wrong?"

Tongguan shuddered, he was not afraid that he would be punished for talking to Jian Chen, but he thought that it would be Ji Xia who was killed by the enemies of those ancestors?

With a kind of uneasiness, he showed the melted weapon to Jian Chen.

"Ji Xia, you see, this is a mistake to melt and cast, the ratio of copper and tin is not according to your six qi ratio, but the tin in the six qi is regarded as copper tin."

Jian Chen took the newly cast spear and tried it, and was slightly surprised. It is said that the letter is better than the book, but so far he has believed in the book, especially the very simple Jin Youliuqi's statement, he feels that since it is summarized by the ancestors, it will definitely not be wrong.

He thought that the reason for the brittleness before was because the smelting technology was not up to par, and he didn't consider that there was a problem with the ratio, but now that this thing was in front of him, he knew that it was not the problem of the smelting technology at all, but from the beginning, the ratio of copper and tin was not right!

"There are six Qi in gold...... Doesn't this six-qi statement mean the proportion of copper and tin? Rather, the ratio of copper to scrapped copper-tin alloys? (To be continued.) )