The old Lu family has now mastered the techniques of forging and casting.

It may be relatively rudimentary, but once mastered, further research and improvement can be carried out.

Is the coal of the Lao Liang family different from the coal of the Lao Lu family?

A warrior from the old Lu family drove to Lao Liang's house and would bring back enough coal to enable Lu Wu to conduct the experiment.

Of course, Lu Wu didn't want to take it by force, it was just a simple deal.

Although several "secretaries" of the Jin State are calculating and calculating, the domestic political situation looks confusing, and the chaos is not chaotic.

At this time, if you want to annex each other by force, believe it or not, it is the end of whoever makes the first move and who dies first?

Lu Wu, who did not go out of the mountain, has been inspecting the coal mountain for several days.

He remembered something.

In modern times, coal is not directly used for use, as if it is transported to a certain factory, and it is delivered to some machine using a slipway conveyor belt.

Why?

Lu Wu felt that he needed to figure it out.

Natural coals vary in size, and there are differences in the composition of the elements that cannot be seen with the naked eye.

With the current age, it is naturally impossible to detect the elements contained in it, and it is not clear that the difference in the composition of the coal is not clear.

"Why is it that the same coal has different results after use?" Lu Wu squatted on the ground, ignoring the question of whether it was dirty or not, and reached out to fiddle with the coal, while thinking: "It seems to be normal!" Smelting metals requires the addition of related elements, isn't it a kind of harmony? The elements of the ore need to be adjusted, and it is not surprising that the coal needs to be adjusted. ”

So, what is the role of the modern slipway conveyor belt to transport coal into those things?

A flash of light appeared in Lu Wu's mind, and he thought: "In the memory screen, some of the chute conveyor belts have been dripping ......"

A picture came back to his mind.

The coals are placed on a constantly shaking sieve, and they are being carried forward by the pulley path and the size is being distinguished.

Lu Wu had a lot to think about.

Whether the water from the coal is brought by itself or specially passed by hand.

Is the water pure water, or is there some chemical added to it?

Once chemicals are needed, they will not be able to be made with current technology!

What is the role of screening the coal, or is it simply picking out the same quality?

No one could help Lu Wu with these things.

Because of the mismatch of the major, he knows very well that he will definitely have to deal with the study of coal for a long time in the future.

"Get the ropeway out first!" Lu Wu can't solve the problem of coal for the time being, and he can't do anything else? He looked at Zhuo and commanded, "Order the craftsman ......"

And so and so and so on.

Something to be made, described.

In fact, it is to make a fixed frame, and then get a load-bearing column of the right quality, and look for a tough rope.

Pull up from the top of the mountain and continue to the bottom of the mountain, forming a ropeway.

This kind of thing depends on what it wants to carry, and the requirements are different.

The accumulation of technology before the old Lu family came into play at this time.

Lu Wu had already figured out the gears, and the pulleys had also been figured out.

Gears are indispensable for industry, and after human beings discovered the usefulness of "wheels", various "wheels" were applied to all aspects of human beings.

As long as you can ensure that the rope does not break easily, and things slide down the mountain, you can also pull it up again.

Actually, it was also Lu Wu's brain that was not open enough before, otherwise he should have started it a long time ago.

He basically wants to make something, waits for which tool he needs, and then thinks of making a certain tool.

This is also the norm for most people.

It is only when you need to use it that you think of a tool that is difficult to pay attention to.

Back at the foot of the mountain, Lü Wu summoned all his retainers.

Not every retainer will be in close proximity.

For example, Zhuo spends most of his time in the mountains, while Liang Xing will go to the surrounding nobles to eat, drink and have fun.

The other retainers, who have responsibilities to be responsible for, cannot be idle at home all day waiting for the call.

In this way, Lu Wu issued a summons, and after waiting for more than ten days, the retainers were counted.

During these ten days, Lu Wu ran back and forth on the mountain when he had time, supervising the construction of the ropeway.

Of course, he knew that steel ropes were best for ropes.

The problem is that the output of primary steel is pitifully small, and it is not enough to make high-quality weapons and equipment, so where can the excess primary steel be used to make ropes.

In addition, the drawing has been studied for so long, but it still has not been studied.

The output of primary steel is sufficient, and it cannot be made without mastering the drawing technology.

Finding a series of problems, Lu Wu came back to his senses a little.

Turns out he still has so much to do!

Even if the ropeway is built, it will definitely take a period of testing.

How much weight can be loaded, little by little.

service life, etc., it takes time to verify.

The only thing that doesn't require a lot of brains is to ensure the clearance under the ropeway, that is, there is no human activity.

In the construction of the ropeway, a winch is applied.

To put it bluntly, the winch thing only lacks the idea of "flash of inspiration", and the technical content is not high.

After deciding to use water power, Lu Wu had already made the winch and put it into use a long time ago.

The old Lu family is studying how to make the winch smaller, and once it is successful, it will definitely change a lot of things.

The retainers gathered, and the meeting was still held in the manor halfway up the mountain.

Before, Lu Wu had already looked at the relevant data.

In the four months since he left, the old Lu family has cultivated a lot of cultivated land, bringing the total cultivated land to 160,000 mu.

It's a process of starting something from nothing.

Of course, 160,000 mu can't support all the people of the old Lu family.

At present, a family needs at least 30 acres of land to meet the needs.

And there are at least four people in a family, and there are even more than a dozen people.

The more family members there are, the more land you need to cultivate.

The old Lu family now counts slaves, and the population has exceeded 80,000.

As for how much it is 80,000, it is difficult to calculate for a while.

A statistical way to gather people and line up one by one?

It's a good number, but it's not really that easy to do.

First of all, how to concentrate is a difficult problem.

Ensuring order after concentration is another problem.

What about those who can't move?

What a loss caused by stopping work.

It's really that simple, don't think that the ancients were stupid and did it earlier; In modern times, there is no need to go door-to-door to count the population.

At the meeting, Lü Wu first mentioned that the cultivated area could be spread out.

That is to say, the strength of the old Lu family is enough, there is no need to concentrate the population in one area, it is time to establish more farms and make greater use of the land.

Yu Xian had been waiting for this day for a long time, and came up with his own plan.

After reading it, Lu Wu felt that there was no problem.

Yu Xian was going to build according to those plans, and he promised that as long as a large number of laborers were not transferred, the cultivated land of the old Lu family would exceed 300,000 mu in the coming year.

Because of the accumulation of experience, given him three years, the old Lu family's cultivated land will reach one million mu.

A million sounds like a lot, but it's actually 10,000 hectares.

In the early years of the Western Han Dynasty, Lu Wuji was only the uncle of Emperor Liu Che of the Han Dynasty, Wu'an Hou Tianwei, and there were nearly 200,000 hectares of arable land along the Yellow River?

Nima!

One family has 20 million acres of arable land?

It's so scary!

Lu Wu also saw the content in the series, and he couldn't believe it.

After all, there are only many acres of cultivated land in the Western Han Dynasty, and one field worm accounts for 20 million mu, which is a bit exaggerated!

How much arable land did the Yin clan, who had the most arable land in the Jin Kingdom, master?

In this regard, no family will publish data with a big swagger.

In recent years, the old Lu family's grain needs to be purchased from outside, and the main trading families at first were the Han family and the Wei family.

Later, Lü Wu caught up with Zhigang, which was equivalent to opening a channel for purchasing grain from the Zhi family, the Zhongxing family and the Xun family.

Recently, he has been thinking about whether to contact the Hao family to obtain new food procurement channels.

According to Yu Xian's guarantee, the old Lu family will be able to develop one million acres of cultivated land within three years.

The problem is that the population of the Lao Lu family will only continue to increase, not show a downward trend, and the area of arable land needed will also increase.

Lu Wu finished arranging some of the things that were supposed to be done.

Song Bin endured it for a long time and asked, "Lord, has the king not given the land this time?" ”

This time, Lu Wu, who had not only made many great achievements, did not obtain a new fief, but several "Qings" also did not have a harvest on the land.

Lü Wu had heard that the Jin State was going to swallow part of the territory of the Qin State, but it still needed to be negotiated with the Qin State.

It is said to be a negotiation, but in fact it is to suppress it.

The Qin State was defeated so badly this time, there is a great possibility that it will succumb.

It's just that even if the Qin State succumbs and the territory of the Jin State expands, how much land is added is also the meat in the mouth of the "Qing", and small and medium-sized nobles like Lu Wu can only stare dryly.

Lu Wu seeks to get "Huo" in his hands, and it is difficult to say clearly when the opportunity will come.

The topic of new fiefdoms was skipped.

Lu Wu motioned for them to remain silent for a while, waited for a while, and said, "Jiancheng was decided before the age of two, and it has not been able to take action. ”

In a word, the retainers had a count, and their expressions became solemn.

Whether there is that strength to build a city is a test of the overall strength of a family.

The Qin State has always been regarded as a weak country because of the scarcity of cities.

Many vassal states of the Central Plains thought: Oh my mother! I have more cities than Qin, so of course I am stronger than Qin!

This is a long time since the development of the Central Plains, and it has little to do with the strength of the immediate strength.

Yu Xian asked very excitedly, "Lord, build the city now?" ”

"Nope." Lu Wu didn't want his retainers to have any misunderstanding, and said, "Arrange 10,000 laborers to repair the sewers first." ”

Many retainers were stunned.

In their cognition, isn't the first thing to build a city is to build a city wall?

What is the operation of getting the sewer first?

Of course, Yu Xian hopes to build a city, and after pumping out 10,000 laborers, won't the cultivation of land be affected?

Song Bin also had his own ideas, he hoped that Lü Wu could give more people to become the samurai class and increase the conscription source of the old Lü family.

The rest of the retainers also had their own desires, hoping to get a group of laborers to complete the tasks they were given.

After listening to what they had to say, Lu Wu fell silent for a while.