Wei frowned and said: "Don't hide it from the leader, this saw is made of copper to make the spearhead, which should be the hardest, and I am afraid that redoing it will not change anything." ”

Yang Hao thought for a while and said: "Try all those kinds of copper, choose the most reliable one, the copper used to make spears is not necessarily suitable for making tools, and when making the rest of the tools in the future, it will also be handled according to this method, and you will be able to find the most suitable one." ”

Seeing that Yang Hao was so insistent, Wei Ye could only agree, but he was not optimistic about this method.

Seeing that spring is about to begin, the tools have not yet been a finished product, Yang Hao is very anxious, if he can't make the ploughshare and cocoon before the beginning of spring, it will inevitably affect this year's grain harvest.

Without food, it would be a fool's dream to talk about any great ideals.

Thinking of this, Yang Hao said: "The matter of weapons will be handed over to the rest of the others to make them, you will be in charge of those tools in the past few days, so you must make them as soon as possible." ”

Wei wondered, "Why is the leader so anxious?" ”

"The farming season is coming soon, and these tools are related to the grain harvest, no matter how difficult it is, they must be made."

When Wei heard that these tools were actually linked to food, his heart suddenly sank, and he said very solemnly: "Wei Ling!" ”

At the same time, the news of the fall of the Sanshu Kingdom spread through small tribes to the Youyi clan in the east.

Youyi, as the most powerful tribe of Dongyi, although they were ostensibly subordinate to the Xia Dynasty, small frictions still existed.

And the country of Sanyu is on the only way for the Xia Dynasty and the Youyi clan to communicate, whether it is the Xia Dynasty crusading against Dongyi, or Dongyi invading the Xia Dynasty, this reason cannot be avoided.

This time, the fall of the Three Scholars Kingdom not only shook the Great Xia court, but also surprised the Youyi clan.

The conflict between the three kingdoms of Youshi Yuyu has been going on for a long time, but the existence of the Xia Dynasty did not dare to carry out large-scale crusades, but the two sides often captured each other's clansmen as slaves.

Since succeeding to the throne, through continuous foreign wars, it can be said that he has completely pacified the southern part of the Shandong Peninsula and moved the territory to the coastal area.

There are still clans, dozens of large and small square countries, and the population is as large as stars, except for the poor clan in the north, it can be said that it is the most powerful force in the east.

Ren Yu, who is upright and in his prime, is jealous of Xia Qi, but he does not surrender to him in his heart.

Since he Xia Qi can be the co-master of the world, he can naturally replace him, as the so-called Son of Heaven is strong and strong.

Ren Yu thought so and did so, so he completely cleaned up the opposition forces within the territory, and designed to kill the monarch of Xue Guo, who was close to the Xia Dynasty, but it made him regret that the designated heir of the old monarch escaped, and the direction of escape was likely to be the direction of Sanyu.

It's just that after sending people to chase and kill, he fought with the Sanshu Kingdom a few times, worried about Ren Yu, who was in the Xia Dynasty's large-scale crusade, and after asking Wu Ding for no result, he endured the anger in his heart.

And this time, Sanshu was destroyed, making him faintly feel that his opportunity had come.

And what's even more wonderful is that these people who destroyed the Sanshu Kingdom are actually some fugitive slaves, which has a great chance to pull this newly rising force to their side.

And if they don't say yes? Ren Yu smiled cruelly.

The reaction of the Youyu clan was very fast, and a day after receiving the news of the destruction of the Three Misty Kingdom, they gathered the nobles of the tribe to discuss what benefits their tribe could gain from this change.

When the snow melted, there was the capital of the still clan, and two groups of envoys headed for the west and the east respectively.

Outside the city of Chang'an.

Taking advantage of the warmer weather, the farmers who have been allocated land have already begun to get busy.

The weeds have been burned out in the winter, and as the weather warms up, the frozen soil gradually becomes much softer.

Farmers carry improvised farm tools, clean up stones from the soil, and shrub roots that have not been burned out, which can affect the growth of crops, and this is a must-do for experienced farmers.

The riverbank is full of busy scenes, like a production brigade.

When the farmers were busy, Yang Hao was not idle.

Although he didn't know when the farm tools would be made, he had to make more preparations for spring ploughing.

Yang Hao personally rode his horse for several days in a row, and repeatedly checked along the river bank several times.

Farmland is placed on the banks of rivers, which has both benefits and harms.

The advantage, of course, is that it is very convenient to get water for irrigation, but if there is a flood, it is possible to destroy all efforts and return to the pre-liberation period overnight.

After all, last summer, the terrible flood, Yang Hao still remembers it vividly.

In order to minimize the loss of food, the construction of dikes and canals is an imperative step.

After several days of on-site observations, Yang Hao began to assess the matters needed for construction.

In order to prevent nearly 10,000 acres of fertile land from being damaged by floods, the construction of embankments is definitely a great challenge for the productivity of this era.

In the face of such a huge project, Yang Hao suddenly felt that the slavery system was still somewhat useful, at least in the use of manpower, he could use it boldly and with confidence, after all, the death of a few slaves would be like the death of a bedbug, and there would be no psychological burden.

But the Daqi tribe can't do this, as the so-called gains must be lost, the foundation of Daqi is those who are at the bottom, if they return to slavery again, it will definitely be the old birthday star who hangs himself for a long time.

Slaves could not be used, and people could not be forcibly requisitioned to build embankments, Yang Hao was a little difficult.

After thinking about it for a long time, Yang Hao wrote the words "work for relief" and "monetary system" on the bamboo slips.

Yang Hao has some economic knowledge, and he knows that if there is no equivalent as a support for money, it is a castle in the air and a bubble in the water.

However, fortunately, the three countries are quite rich, and the goods in the granary are enough to support the implementation of the currency.

The current Daqi tribe only implements a simple monetary system in the army, and there is only one use of money, that is, prostitution.

Yang Hao is very curious, if future generations study the origin of money, they come to a conclusion that money originated from prostitution, I don't know what kind of expression it will be.

The currency used in the military was the shell, which was used as an ornament as the original currency in many tribes.

But this kind of thing is still very different from real currency, and if he wants to promote currency, Yang Hao knows that he definitely can't use this thing.

As the most practical metal of this era, copper is the best material for making money.

What Yang Hao considered was nothing more than whether to use bronze or pure copper.