Three Kingdoms: My brother is Guo Jia

The matter of foreign enemies has plagued the Central Plains since the founding of the Great Han Dynasty.

Yuan Shao of the fourth and third princes could have an army of one million, and he also benefited from this reason.

After all, Union Prefecture and Youzhou have always had a relatively large number of troops.

"Xuan Immortal, how difficult is it to build the Great Wall?"

Cao Cao sighed and shook his head: "This is no longer a problem that can be solved by military strategy alone, and the manpower, material resources, and time consumption involved in it are an immeasurable figure..."

Isn't it?

The First Emperor built the Great Wall.

Emperor Wudi of Han also built the Great Wall.

But the entire border stretches for more than 4,000 miles, even if some precipitous places are left aside.

If you want to build a complete defensive line, I am afraid that you will have to count thousands of miles.

What's more, it has been harassed by foreign enemies for many years, and the defense of the Great Wall will be greatly depleted.

Just like Xuzhou City, the Central Plains soldiers must fight for the place.

The once incomparably strong castle has also been damaged in war after war.

This maintenance cost is another unimaginable amount.

"I understand this, Rome was not built in a day, and I will think of a way after the reconquest and annexation of the two states..."

Guo Yun nodded, and when he finished speaking, he saw Jia Xu's eyes suddenly raised, and quickly explained:

"Don't ask, Rome is a kind of horse above the Huns, and it is the same ancestor as the grass mud horse. "

Jia Xu: "(o?!)"

Xun Yu: "ˊˋ*"

Xun Yu: "(*⊙~⊙)"

There are even such horses?!

No wonder the Huns' war horses are so strong!

"General Guo really knows a lot?!"

"I don't know, I thought General Guo had fought the Xiongnu!"

"Not really!"

"It's really worthy of the God of War. "

Xu Huang and the others looked at each other with some emotion.

Guo Yun: "???!"

This year, is it so casual to pretend?

"Fuso don't think about it for the time being, and the affairs of the two states can be put aside, and for now there is only here." "

Cao Cao did not care about these details, and pointed his finger on the ground, which was a lengthy front on the border with Qiang and Hu.

In the area of Hedong, with Yanmen Pass as the central point, the map covered by Cao Cao's fingers is the boundary of foreign enemy invasion.

"In fact, in the west of Yanzhou, the strength of troops is not a problem, but there are too many gaps in the entire border, these bastards are pervasive, even if I send more than 100,000 troops over, I may not be able to take care of it!"

Cao Cao's eyes were filled with killing intent, and he said coldly: "Can Xuan Immortal have a way to suppress it?!"

Hearing this, Guo Yun shook his head.

At this time, the Great Wall was scattered, and it was covered by lofty mountains near Yanmen Pass, and it was impossible to prevent foreign races from interspersing it.

It was not until after the Tang Dynasty that it was relatively perfect.

"Alas. "

Cao Cao sighed again.

Counting this time, Cao Cao sighed more than ten times.

I am afraid that when facing Yuan Shao, there are not as many soldiers at a time as today.

It can be seen how melancholy he is about the troubles of foreign races.

"Only by spending a lot of money to build a towering Great Wall can we really put an end to this problem, and there is no other way." "

Guo Yun thought about it seriously, and there was indeed only this way.

Foreign enemies burning, killing and looting are different from ordinary wars, they are small-scale impacts, even if the army is nearby, it is difficult to help.

After all, by the time the scout sent a message to the army, the foreign enemy squads would have already run away.

If they do not occupy the city or seize the land, they cannot control it at all.

"It is not that the imperial court is unwilling to build the Great Wall, but the geographical location around Yanmen Pass curbs the possibility of construction. "

Xun Yu stepped forward, he was most familiar with industrial and peasant affairs, and pointed to the map: "This area is all swamps and fertile fields, even if it takes a lot of manpower and material resources, it cannot be built." "

"And here, between the lofty mountains, there are several chasms, even if you barely penetrate the defensive wall, it is useless, once it enters the rainy season, under the impact of the flood of mountains and mud on both sides, it will definitely be destroyed!"

"Here..."

"Here..."

Xun Yu deserved to be meticulous, and skillfully marked more than a dozen places.

Isn't it?!

In the four hundred years of the Great Han Dynasty, since Emperor Wu, how many dynasties have passed, and how many workers and peasant officials have pondered hard to solve this problem.

And finally?!

Still nothing.

Xun Yu, who is a big sinong, has also thought about it a thousand times, and it ended in despair.

"What Wen Ruo said is exactly what I have a headache for, even if I am willing to spend a lot of money, it is also limited by geographical terrain..."

Cao Cao sighed.

The First Emperor built the Great Wall!

Emperor Wu also built the Great Wall!

If he Cao Mengde can also build the Great Wall, how high is this glory?!

Do you think he didn't think about it?!

But the area around Yanmen Pass, between the lofty mountains and mountains, the location that can be built has long been completed by the emperors of the Han Dynasty for 400 years.

What was left to him Cao Cao were all problems that were more difficult than ascending to the sky.

At least he was in a hot air balloon halfway!

"Master, you are willing to spend a lot of money!"

Hearing this, Guo Yun raised his eyebrows and said: "How simple these places are in the swamp, as long as the cement is installed." "

"With these two cols, rammed earth construction will definitely not work. "

"But with the hardness of cement, as long as the thickness is greatly increased, not to mention the general rainy season, even midsummer heavy rain, there is no need to worry." "

"Cement?!"

Hearing this, everyone looked at Guo Yun with a confused expression.

What the hell is this?!

Sounds awesome!

Jia Xu's spirit suddenly flashed, and his eyes shone with a smile:

"Needless to say, this must be mud from the Xiongnu side, right?

After hearing Jia Xu's words, everyone also looked like this!

Guo Yun: "Convex (艹皿艹)"

What about brains?!

Didn't bring anything, did it?!

Seeing Guo Yun's black line, Jia Xuan smiled and said, "Wen Ruocai is the best at the construction of workers and peasants!"

Xun Yu: "(‵o) convex"

"It should be a kind of earth, right?"

Xun Yu responded tentatively: "I didn't expect that Xuan Immortal also studied in this area, Wen Ruo really admired!"

"Mixed earth. "

While flipping through the encyclopedia in his mind, Guo Yun explained: "It is to use limestone and clay as the main raw materials, crush, batch, grind to make raw materials, etc., and then mix with gravel, stones and water stirring!"

"Specifically, you have to try to know. "

Guo Yun did not pack tickets, after all, he had not really practiced.

"What if it succeeds?!"

Cao Cao doesn't care about the details, he cares more about the results.

"It's enough to change the geography, if the current city wall is poured with cement, the hardness should increase by three or four times, right?! "

Hiss?!

Hearing this, everyone present gasped.

If there is no problem with the galloping of the war horse?!

Then it becomes a breeze.

Jia Xu and Xun Yu looked at each other, and both saw the excitement in each other's eyes.

Cao Cao even shot up and made a grand wish:

"If it is really feasible, even if I spend my whole life working, I must build a Great Wall on this border!"

No wonder Cao Cao was so excited!

What the First Emperor did not do, the Martial Emperor did not do!

But if he Cao Cao did it, no matter how bad his reputation was before.

Famous for eternity, it will definitely not be able to run for centuries.

Thinking of this, Cao Cao couldn't hold back the excitement in his heart, and looked up to the sky and laughed: "Hahahahaha!"

This laughter, don't talk about Guo Yun.

Even the other Wen Chen military generals heard goosebumps.

"Cao Ren, order the troops, and the army will not be able to go to Zhongshan in Jizhou to deter Eryuan. "

Cao Cao acted resolutely and ordered, "Guan Yu and Xu Huang each brought 10,000 elite soldiers to aid Yanmen Pass to prevent foreign enemies from invading... If you encounter a foreign enemy, you will not accept any prisoners, and you will kill them without amnesty, understand?!"

"Whoosh!"

After Cao Ren, Guan Yu, and Xu Huang led the order to leave.

Cao Cao asked, "Wen Ruo, how much gold is left in stock, can it cope with the construction of the Great Wall around Yanmen Pass?!"

Hearing this, Xun Yu was stunned?!

Boss, how poor you yourself are, don't you know?

Didn't you see that the seven thousand taels of gold have been staying up for several months?!

Looking at Cao Cao's urgent expression, Xun Yu was really reluctant to say anything about the hundreds of taels, and sighed tactfully: "Lord, the gold in stock at the moment, I'm afraid it won't even be enough to build a new mansion..."

You still want to build the Great Wall?!

Cao Cao: "(Д≡Д)"

Guo Yun: "(⊙⊙)"