Three Kingdoms: I, the eldest son of Cao, a loving father of a great man!

Chapter 174 A strong wind is about to rise, and all the generals will gather together! 【Please subscribe and ask for a monthly ticket】

In fact, at the end of the Han Dynasty.

Not without accurate maps, either.

The wisdom of the ancients is still very powerful. Even the most basic method of shaping mountains and rivers and dividing rivers is enough to draw a topographical map whose outline basically conforms to the facts.

Although relying on human measurement and the rough empiricism of eye and hand coordination, there will be a large error with the actual situation.

But in general it is definitely enough.

And on top of rough cartography.

There is also the Jiri Drum Chariot that appeared in the Han Dynasty. This thing is an artifact specially used to measure the length of the distance. Using the gear machine to expand, it can realize that the snare drum on the cart will be struck every time it travels.

As such.

Just make good use of the scale bar and grid lines, and you can make a map with extremely high accuracy.

Just the many ways listed above.

Both have major flaws.

One is that it is extremely difficult to make.

This method of drawing is time-consuming and labor-intensive. Even if a drum cart is used, it must be driven by a special person, and even the sound of the drum is recorded.

For such a large area of ​​a state, the manpower and material resources consumed are really unknown!
Therefore, the higher the accuracy of the map, the more expensive it is, and at the same time, the rarer it is, you may not even be able to buy it with money.

for example.

With Cao Ang's current status, he only has a rough map in his hand, which is a copy of the one in the hands of the prefects of the counties.

Only the approximate location of mountains, rivers, terrain and rivers are marked, and each city is pointed out. Sometimes I follow this map and even go off the road.

According to Cao Ang's guess.

It is estimated that only veteran comrades in the imperial treasury, or who have worked in a state for many years, will have the most accurate maps in their hands.

The second is the limitation of the times.

Longitude, latitude, and even other epoch-making factors have not been taken into account.

This leads to the larger the area covered by the map, the larger the error, which is unavoidable.

In addition, there is less content marked.

……

And compare the two.

The map Cao Ang fished out of the river now, made with modern cartography technology, obviously formed a dimensionality reduction blow.

Not only is the accuracy extremely high, but the error is pitifully small.

Used on the battlefield, it can be called a strategic artifact. In the future, it will be hand-engraved for important generals such as Zhang Liao in the army.

The distance of the march, the number of days it takes to lead the army to arrive, and the precise setting of ambushes according to the terrain, these are probably no longer illusory ideas.

And most importantly.

But this map also marked resource points!

thought here.

Cao Ang couldn't help feeling a little emotional.

Isn't it sleepy to send a pillow?

Right now, he is in urgent need of various mineral resources, but the resource points that the imperial court has developed are not currently within the scope of Jiyin County.

It may have been a long time before his father Cao Cao took control of the entire territory of Yanzhou and then took over these minerals that nominally belonged to the imperial court.

This greatly delayed the progress of the project.

But with this topographic map of Yanzhou, it is different. He can accurately find those mineral resources that have not yet been discovered.

No more running around like a headless chicken.

It is best to be within the scope of Jiyin County.

With the mobilization of manpower to mine, it must be more than enough to cope with the consumption in a short period of time.

……

Carefully reroll the map and put it back in the box.

Cao Ang came to the stele habitually.

For nothing else, he just wanted to see the notes.

When looking up.

Then I saw that a few lines of text had been displayed on the surface of the stele, just like in the past.

"Item Name: "Yanzhou Topography and Relief Map"

Role: observe and use
Remarks: If you can collect all [-] maps of Yanzhou, one of the thirteen prefectures in the Han Dynasty, they will be automatically combined into a national map, and new functions will be randomly evolved. "

This remark did not disappoint.

At a glance, Cao Ang felt refreshed.

He was still worried before that if there was only a map of Yanzhou, the power of the Cao family would exceed the scope of Yanzhou in the future, wouldn't there be no map to use?

It now appears that worry is unnecessary.

As long as he has a few bursts of European energy and catches all the maps of the states in the world, not only can he synthesize a national map, but even have new functions.

Although I don't know what the so-called new features are.

But come to think of it will not disappoint.

…………

After seven days.

Shanfu County is located in the southeast of Jiyin County.

Cao Ang, who galloped all the way with a large group of people, is currently holding a part of the map that has been rubbed and engraved, and is doing calculations and comparisons.

after getting off the boat.

The first thing Cao Ang did was to immediately search for resource points and start arranging people to mine them.

Just after some searching according to him.

However, it was found that the coal mines had the largest number in Yanzhou, and almost all of them were distributed in the eastern part of Yanzhou, that is, Taishan County, Jibei Kingdom and other places.

Iron ore is not Yanzhou's dominant resource.

In the entire territory of Yanzhou, there are only a few large-scale iron mines, and they are also within the scope of Taishan County. One of them is an official iron mine that has been excavated and mined by the imperial court.

As for copper mines.

Yanzhou has almost no such thing.

Search all the counties in Yanzhou, at best, in the east and some places in the north, and find a few pitifully small copper mines.

It's completely useless!

The resources in western Yanzhou are very poor.

Among them, Jiyin County is the most important.

thought here.

Cao Ang felt that Dong Zhuo had arranged for his father Cao Cao to be the prefect here, it was a hell of a thing.

……

But reassuringly.

There are no large mines in this county, but two or three kittens can still be made.

Three of them are coal mines.

One is north of Bo County, south of Dingtao, at the junction of Yanzhou and Yuzhou Liang.

One is located in the southwest of Juye County, adjacent to Dayozawa, at the junction of Jiyin County and Shanyang County.

The last place.

It is where Cao Ang is currently located, on the southeast side of Shanfu County, where there is also a coal mine.

And also a very coincidental thing.

That is the only iron mine in Jiyin County, and it is also in the southeast of Shanfu County.

Although it is a rather barren rare mine, mining seems to be quite difficult.

But Cao Ang didn't want to develop industrialization. With the current weak consumption of the entire Cao family's power, this small vein is definitely more than enough.

Wait until the iron ore gap is large in the future.

At that time, he had already rushed out of Yanzhou, and he might have already occupied several sites with huge resources.

So nothing to worry about.

So under consideration.

Cao Ang used the limited time to bring a large team to Shanfu County, a good place where coal and iron ore can be mined at the same time.

……

"Boda, this is the place in front of you. In the days to come, your only task is to recruit people to dig and mine here."

"Leave all your original responsibilities for the time being, and you don't have to take care of the affairs of the county. When you dig up charcoal or iron, you immediately send someone back to report to me. At that time, I will definitely reward you!"

Boda is Ren Jun.

When Cao's father and son led the Chenliu Alliance to attack Dong Zhuo in the west, they stayed in Zhongmou County for a while.

At that time, it was this person who led hundreds of people from the family of disciples to defect. After following the Cao family's army to fight, he is now also serving as a moderate official in the county.

Simply speaking, this person may not have any impression.

But when it comes to Cao Wei's farming system, it can be connected with Ren Jun.

Ren Jun and Zao Zhi, these two are the great heroes of Cao Wei's implementation of the garrison system in the original historical trend.

A good hand in agricultural production!
The Cao family can safely start the war machine, and the logistical support of these two talents is indeed indispensable.

Cao Ang originally planned to keep Ren Jun, and after he took control of the entire Yanzhou, let him carry out the farming system and take charge of agricultural production as it was.

It's just that there is really a shortage of people now!
Count it over and over again.

Under Cao Cao and Cao Ang's command, the talents who can be named and have the ability to stand alone are basically assigned irreplaceable tasks.

Either to recruit soldiers, or to give advice, or to serve in the army, in short, you can't leave.

It's just that these two brothers are fine now.

Therefore, Cao Ang simply brought Ren Jun over, while Zaozhi left him alone for the time being.

Think about it here.

Cao Ang couldn't help but shook his head.

There is still a shortage of talents under his command. People like Xun Yu and Xun You are too high-level.

On the contrary, middle-level cadres are somewhat out of gear.

This is indeed a hassle.

I can only wait for a way to recruit more in the future.

……

At this moment, Ren Jun listened to Cao Ang's orders.

He couldn't help but turn his gaze to the barren land in front of him, which looked quite bare.

Then he said with a little worry: "General, is there really charcoal and iron here?"

Originally with his character.

It is impossible to do something to question the superior.

But the whole process is kind of magical.

Before that, he was a small official in the county mansion. Although his official position was not big, he was more or less number one. What's more, the entire clan's disciples followed him, so the foundation behind him was considered solid.

It turned out one day.

Suddenly a notice came from above, saying that he was the No. [-] person in the county, and the prefect's son was looking for him.

Holding a heavy army, being able to participate in many big and small matters of the entire force, and possessing super high decision-making power, this noble son is by no means a playboy who is just waiting to die.

Such a big man looking for him probably has some errands, so Ren Jun is quite happy in his heart.

As a result, General Cao in front of him.

After asking him some information, he took him and led a large group of people, and came straight to this place.

There is no pre-preparation.

Pointing to a piece of wasteland and saying that there is a mine in front of me, it is a bit ridiculous to think about it.

And looked at Ren Jun's worried eyes.

Cao Ang waved his hand.

Confidently said: "Boda can only arrange manpower to excavate. Since I said there is one, then there must be one here!"

"Besides, you don't have to worry about it. As long as you do your best, even if you really don't find charcoal and iron in the end, I will definitely remember your hard work!"

This said.

Ren Jun was rather embarrassed.

When he questioned, it was not purely for his own credit or official position, it was just suspicion.

So Cao Ang said so.

Ren Jun didn't say much anymore.

He bowed his hands to Cao Ang, bowed down, and said solemnly.

"Don't worry, general, the errands you have given me will definitely be done with all my heart and will live up to your entrustment!"

……

We like people who are down-to-earth!

Cao Ang heard the words.

Immediately nodded happily.

He reached out and patted Ren Jun on the shoulder.

Then he told him: "In the process of searching for ore and mining, if you need anything, or encounter any troubles, you can send someone to tell me."

"I'll do my best to help you out!"

Ren Jun said yes again.

After the order is complete.

Cao Ang turned around again, looked at the wasteland in front of him, and began to worry about it.

In fact, he also knew.

Now after finding the mine deposits, the next problem is the shortage of manpower.

Like recruiting soldiers, mining also requires young and strong men. Young and middle-aged labor is a kind of resource no matter which state or county they are in.

And hard work like mining.

If you don't give enough food or money, the treatment is really not as good as working hard in the army.

Therefore, it is not easy to have a large number of miners who mine ore in a short period of time.

thought here.

Another idea was born in Cao Ang's mind.

It is not yet known that it will be the year of the monkey to recruit miners by ordinary methods, but there is a very reliable and fast channel right now, which seems to be able to be used.

……

After everything is arranged.

Cao Ang left behind most of his troops.

They just returned to Dingtao County with Dian Wei and a dozen or so people. Due to the small number of people, the return speed was much faster than when they came.

In just a few days.

He has already arrived at Dingtao City.

Just as soon as I got close.

Cao Ang felt something was wrong.

As the county seat, Dingtao County is the most developed town in the county to a certain extent. As long as there are no special circumstances, all four city gates are open during the day, allowing pedestrians to come and go.

However, when Cao Ang arrived today.

There is actually only one passage left at the south gate for two or three people to walk side by side. There are still a large number of soldiers guarding the gate. Anyone who enters the city needs to go through very strict inspections.

And after entering the city.

The atmosphere in the entire county was even more tense. The pedestrians and carriages that used to come and go, as well as the shops peddling on both sides of the street, disappeared without a trace at this moment.

Not only that.

There are even soldiers patrolling the streets.

All of them were neatly dressed, holding sharp weapons in their hands, and their faces were solemn and solemn.

With a small team as a unit, they constantly patrol the main streets in the county. When they encounter people wandering around outside, they will even severely reprimand them, and after checking their identities, they will drive them home.

Such a high alert look.

Let Cao Ang know that something must have happened, and there is a high probability that a war broke out.

He didn't dare to waste time.

After ordering someone to send his luggage to the mansion, he took Dian Wei and went straight to the prefect's mansion.

And at this moment in the prefect's mansion.

Cao Cao, the prefect of Jiyin County, is summoning all the generals in the army to discuss urgent military affairs.

……

Monthly ticket recommendation ticket

(End of this chapter)