In fact, in the late Han Dynasty.
It’s not like there aren’t accurate maps.
The wisdom of the ancients is still very powerful. Even the most basic methods of typing mountains and rivers and dividing rivers are enough to draw a topographic map with an outline that is basically consistent with the facts.
Although relying on human measurement and rough empiricism with eyes and hands, there will be a large error from the actual situation.
But it's definitely enough under normal circumstances.
And on top of crude cartography.
There are also drum-recording carts that have appeared since the Han Dynasty. This thing is an artifact specially used to measure the length of a journey. It uses a gear machine to expand the distance, and the small drum on the cart can be beaten every few miles.
This way.
Just make good use of the scale and grid lines to create a highly accurate map.
Just the many methods listed above.
All have major flaws.
One is that it is extremely difficult to produce.
This mapping method is time-consuming and labor-intensive. Even if a drum-recording car is used, a dedicated person will be required to drive it and even record the drum sounds.
The manpower and material resources consumed in such a large area as a state are countless!
Therefore, the higher the accuracy of the map, the more expensive it will be. At the same time, it will also be rarer, and you may not even be able to buy it for money.
for example.
With Cao Ang's current status, he only had rough and simplified maps in his hands, which were copied from those in the hands of the prefects of each county.
It only marked the approximate locations of mountains, rivers, terrains, and rivers, and pointed out various cities. Sometimes when following this map, one might even take a wrong path.
According to Cao Ang's guess.
It is estimated that only old 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 limitations of the times.
Longitude, latitude, and even other epochal factors were not taken into account.
This leads to the larger the area covered by the map, the greater the error, which is inevitable.
In addition, there is little labeled content.
…
And comparing the two.
The map that Cao Ang fished out of the river now is made using modern cartography technology, which obviously constitutes a dimensionality reduction attack.
Not only is the accuracy extremely high, the error is pitifully small.
When used on the battlefield, it can be called a strategic artifact. In the future, important generals in the army such as Zhang Liao will have a copy made.
The distance traveled when marching and fighting, the number of days it takes to lead the army to arrive, and the precise setting of ambush according to the terrain, these are probably no longer vague ideas.
And the most important thing.
There are also resource points marked on this map!
Think of this.
Cao Ang couldn't help but feel a little emotional.
Why don't you give me a pillow if you feel sleepy?
At the moment, he is in urgent need of various mineral resources, but the resource points that the imperial court has developed are currently not 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 the minerals that were nominally owned by the imperial court.
This greatly delayed the progress of the project.
But with this topographic map of Yanzhou, it was different. He could accurately find the mineral resources that had not yet been discovered.
No more running around like a headless fly.
It is best to be within the scope of Jiyin County.
After mobilizing manpower to mine, it must be more than enough to cope with the consumption in a short period of time.
…
Carefully roll up the map again and put it back into the brocade box.
Cao Ang came to the stone monument as a habit.
For no other reason than that, he just wanted to read the notes.
When looking up.
Then I saw a few lines of text displayed on the tablet, just like before.
"Item name: "Yanzhou Topography and Relief Map"
Function: observe and use
Note: If you can collect all 13 maps of Yanzhou, one of the thirteen states of the Han Dynasty, they will automatically be combined into a national map, and new functions will be randomly evolved. "
The remarks this time did not disappoint.
At one glance, Cao Ang felt refreshed.
He was still worried before that if there was only a map of Yanzhou, wouldn't there be no map to use if the Cao family's power exceeded the scope of Yanzhou in the future?
Now it seems that the worry is completely unnecessary.
As long as he breaks out his European Qi a few times and catches all the maps of all states in the world, he will not only be able to synthesize a national map, but even have new functions.
Although I don’t know what the so-called new function is.
But I won't be disappointed.
…………
Seven days later.
Shanfu County is located in the southeast of Jiyin County.
Cao Ang, who came galloping with a large number of people and horses, was currently holding a partial map that had been printed and copied, and was making calculations and comparisons.
After getting off the boat.
The first thing Cao Ang did was to immediately find resource points and start arranging people to mine them.
Just based on his search.
However, it was discovered that the coal mines in the entire Yanzhou were the largest, and almost all of them were located 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 Yanzhou territory, there are only a few large-scale iron mines, and they are also within Taishan County. One of them is a government-operated iron mine that has been discovered and mined by the imperial court.
As for the copper mine.
There is almost no such thing in Yanzhou.
After searching all the counties in Yanzhou, at best, we found a few pitifully small copper mines in the east and some locations in the north.
Totally useless!
The resources in western Yanzhou are very poor.
Among them, Jiyin County is the worst.
Think of this.
Cao Ang felt that it was really a ghost to ask Dong Zhuo to arrange for his father Cao Cao to serve as the prefect here.
…
But it's gratifying.
There are no large mines within the county, but two or three kittens can still make it together.
Three of these coal mines.
One place is north of Bo County, south of Dingtao, at the junction of Yanzhou and Yuzhou Liang.
One is in the southwest of Juye County, adjacent to Ohye Ze, at the junction of Jiyin County and Shanyang County.
The last place.
Even where Cao Ang is currently located, on the southeast side of Shanfu County, there is also a coal mine here.
And it's also a very coincidental thing.
That is the only iron mine in the entire Jiyin County, also in the southeast of Shanfu County.
Although it is a rather barren rare mine, it seems to be quite difficult to mine.
But Cao Ang does not want to develop industrialization. With the current weak consumption of the entire Cao family's power, this small mine is definitely more than enough.
In the future, the iron ore gap will be large.
At that time, he had already rushed out of Yanzhou and might have occupied several territories with huge resources.
So don't worry at all.
So all things considered.
Cao Ang took advantage of the limited time and led a large group of people 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 coming days, your only task is to recruit people to dig and mine here."
"All your original responsibilities have been relieved for the time being. You no longer need to take care of the affairs of the county. Whenever you dig charcoal or iron, you should immediately send someone back to report it to me. I will definitely reward you heavily!"
Boda is Ren Jun.
Previously, when the Cao family father and son led the Chenliu Alliance to the west to attack Dong Zhuo, they stayed in Zhongmu County for some time.
It was this person who led hundreds of people from the retainer clan to defect. After fighting with the Cao family's army, he now serves as a moderate official in the county.
Simply speaking, this person may have no impression.
But when it comes to Cao Wei's farming system, it can be linked to Ren Jun.
Ren Jun and Zao Zhi were both major contributors to Cao Wei's implementation of the farming system in the original historical direction.
A good hand in agricultural production!
The Cao family can safely start the war machine, and the logistic support of these two talents is indeed indispensable.
Cao Ang originally planned to keep Ren Jun, and after taking control of the entire Yanzhou, he would continue to implement the farming system and be in charge of agricultural production.
It’s just that there is really a shortage of people now!
Count it several times.
Under Cao Cao and Cao Ang, the talents who could be named and had the ability to stand alone were basically assigned tasks that were difficult to replace.
Either recruiting soldiers, making suggestions, or serving in the army, in any case, there is no way out.
These two brothers are the only ones who have nothing serious to do now.
Therefore, Cao Ang simply brought Ren Jun over, while Zao Zhi left him alone for the time being.
Think about this.
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 at too high a level.
On the contrary, middle-level cadres are somewhat out of service.
This is indeed a nuisance.
We can only wait and find ways to recruit more in the future.
…
At this moment, Ren Jun was listening to Cao Ang's instructions.
He couldn't help but turn his gaze to the piece of bare wasteland in front of him.
Then he said slightly worriedly: "General, are there really charcoal and iron here?"
Originally based on his character.
It is impossible to question Shangguan.
But there is something magical about the whole process.
He had been a minor official in the county government before. Although his official position was not large, he was still somewhat of a number one figure. What's more, the entire clan's disciples defected to him along with him, so he had a solid foundation behind him.
Finally one day.
Suddenly, a notice came from above, saying that the second-in-command in the county, the governor's son, was looking for him.
A noble master with a large number of troops, able to participate in many large and small matters of the entire force, and possessing super high decision-making power, this is by no means a playboy waiting to die.
Such a big shot probably came to see him for some errand, so Ren Jun was quite happy.
As a result, General Cao was in front of him.
After asking him some information, he took him and a large number of people and rushed straight to this place.
There was no preliminary preparation.
Pointing to a piece of wasteland and saying that there is a mine in front of you, this is really a bit ridiculous when you think about it.
And looked at Ren Jun's worried eyes.
Cao Ang waved his hand.
He said confidently: "Bodaqian just arranges for manpower to dig. Since I said there is one, then there must be one here!"
"Besides, you don't have to worry. As long as you try your best, even if you don't find charcoal and iron in the end, I will definitely remember your hard work!"
That's what I said.
Ren Jun felt a little embarrassed.
When he questioned, he was not simply thinking about his own merit or official position, it was just suspicion.
So Cao Ang said this.
Ren Jun said no more.
He raised his hands in salute to Cao Ang, bowed down and said solemnly.
"Don't worry, General, my subordinates will do their best to fulfill the mission you entrusted to me!"
…
We like people who work hard!
Cao Ang heard this.
He nodded happily immediately.
He reached out and patted Ren Jun on the shoulder.
Then he warned him: "In the process of searching for ore and mining, if you need anything or encounter any trouble, you can send someone to tell me."
"I'll try my best to help you solve it!"
Ren Jun said loudly again.
After the instructions are given.
Cao Ang turned around again, looked at the wasteland in front of him, and began to worry about it in his heart.
In fact, he also knows.
Now that the mineral deposits have been found, the next problem they face is lack of manpower.
Like recruiting soldiers, mining also requires young and strong men. The young and middle-aged labor force is a resource no matter which state or county it is in.
And hard work like mining.
If you are not given enough food or money, the treatment is really not as good as working hard in the army.
Therefore, it is not an easy task to have a large number of miners to mine ore in a short period of time.
Think of this.
Another idea came to Cao Ang's mind.
Relying on ordinary methods to recruit miners is not yet known until the Year of the Monkey and the Horse, but now there is a very reliable and fast channel that seems to be able to be used.
…
After everything is arranged.
Cao Ang left most of his troops behind.
He only took Dian Wei and a dozen or so people back to Dingtao County. Because the number of people was reduced, the return speed was much faster than when he came.
In just a few days.
He had already arrived at the foot of Dingtao City.
Just as soon as he got close.
Cao Ang realized something was not right.
As a county seat, Dingtao County is to a certain extent the most developed town in the county. As long as there are no special circumstances, all four city gates are open during the day, allowing pedestrians to pass by.
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 a large number of soldiers guarding the gate behind it. Anyone entering the city needs to go through very strict inspection.
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 selling goods along both sides of the street, all disappeared without a trace at this moment.
Not only that.
There were even soldiers patrolling the streets.
All of them were neatly dressed, holding sharp weapons in their hands, and their faces were solemn.
As a team, they constantly patrol the main streets in the county. When they encounter people wandering around outside, they will even scold them severely, check their identities, and then drive them home.
Such a high level of alertness.
Let Cao Ang know that something must have happened, and there is a high probability that a war will break out.
He didn't dare waste time.
After ordering someone to deliver his luggage to the mansion, he took Dian Wei and went straight to the prefect's mansion.
At this moment, in the prefect's mansion.
Cao Cao, the governor of Jiyin County, was summoning all the generals in the army to discuss urgent military matters.
…
Monthly ticket recommendation ticket
(End of chapter)
