After the court meeting was dispersed, Guan Yi returned home for lunch, and after a short rest, he sent someone to pick up his daughter-in-law from Qian Zhou's house. On the other hand, he asked Guan Xiaoqi to take people to prepare five big cars, and then took the team to Jiang Wei's house.

Hearing Guan Yi's visit, Jiang's mansion opened the middle door, and Jiang Wei personally greeted him.

"Huh! Zifeng, it's good for you to come, why do you bring so many things? "Jiang Wei, the current general of Shu Han, is fifty-seven years old this year, and after years of fighting, his temples have been completely white, and there are many deep wrinkles on his slender face like knife carvings. When the hands are fist-serving, the calluses on the back of the hands are even more layered. However, his spine is straight, his spirit is strong, and it can be seen that his body is still very healthy.

"Hehehe, General, this is not a vulgar thing. I'm sure you'll love it. ”

"Oh, that's to be seen."

"Is there a relatively wide place in the General's Mansion?"

"A wide place? Yes! Wei usually rarely goes back to CD, and when he comes back, he doesn't have much to do. So a small school yard was built. ”

"Good, then ask the general to send someone to lead the way, and Yi's convoy will go directly to the school field."

When the group came to the school grounds, the Guan family opened the curtain on the car, Jiang Wei only glanced at it, and his eyes showed a look of surprise.

What Guan Yi gave to Jiang Wei was a plate-shaped wooden sand table.

As a history enthusiast before the time travel, Guan Yi strictly followed the teachings of the Taizu of this dynasty: "When you read a history book, you must match it with a historical map." "And Guan Yi is not looking at a flat political map, but a three-dimensional topographic map - only in this way can he have a very intuitive understanding of major events in history, especially military events.

(The most typical positive example is the Battle of Changping in the late Warring States period.) Only by first seeing the three-dimensional topographic map of the Changping area, and then putting Bai Qi's march route into this map, can you truly understand the subtleties of Bai Qi's command in this battle. As for the negative example, please refer to the Red Army's Fifth Anti-Encirclement Campaign: The Red Army's military advisers commanded on a flat map, making great oolongs and jokes. ）

The sand table has existed since ancient times, and it is said that there is a large national sand table in the mausoleum of the first emperor of China. But for ordinary people, the sand table still has certain shortcomings: first, it is not refined enough - who can open the perspective of God in ancient society. The second is that the sand table is not easy to make and preserve - that is, a few mounds of soil were temporarily piled with mud before the war.

But none of this was a problem for Guan Yi, and his favorite thing before crossing was to read history books on the basis of three-dimensional topographic maps. Zhuge Liang's five Northern Expeditions and Jiang Wei's Nine Expeditions to the Central Plains were military events that were repeatedly verified by Guan Yi before he crossed. Therefore, he is very familiar with the geography of Hanzhong and Longxi - thanks to satellites and modern surveying and mapping technology, he has God's perspective.

As the entourage of the Guan family put together more than 500 wooden planks of the same size but different contents on the front in a certain order under the guidance of Guan Yi, a pair of extra-large maps of Yongliang and northern Yizhou with a length and width of 60 meters were perfectly displayed in front of Jiang Wei.

"General, Yi is in the rear, and he has a lot of leisure. Therefore, according to all kinds of map books, this Yongliang Yibei sand table was made. Yi has never been to Yongliang in person, so there are inevitably mistakes in this, and I ask the general to be considerate...... Belch...... General? General? ”

Regarding Jiang Wei's current sluggish state, Guan Yi expressed his understanding very much. After calling twice to see that Jiang Wei did not respond, Guan Yi also quieted down, and accompanied Jiang Wei to quietly look at this painstaking work that took him more than a year of spare time to make.

After a long time, Jiang Wei, who had come to his senses, bowed respectfully to Guan Yi: "Zifeng is affectionate and friendly, and Wei remembers it." ”

"Don't dare, Yi can enjoy the glory in the rear, and it is not because of the great general who fights on the front line. It's really nothing to do such a little thing for the general. ”

"This is really not a trivial matter, with this, my Han's march in Yongliang is like divine help! Zifeng, I, the soldiers of the Northern Expeditionary Army, owe you a great favor! ”

"Yi is ashamed and dare not be. General, Yi has never been to Yongliang, so there may be a fallacy in this, and please correct the general. ”

"Hehehe, Zifeng is too modest, Wei just took a cursory look. There is no obvious fallacy. On the contrary, many dimensions of previous cognition were corrected. Hmm, I see, no wonder Deng Ai was able to take the lead last time. The terrain is like this......"

"General, Yi still wants to ask about something."

"Zifeng, please speak."

"This Wei Wenchang's Meridian Valley conspiracy ......"

"Oh, Zifeng is also interested in this. Now, how about that. I'll be Xiahou Mao, and you will be Wei Wenchang......"

Then the old and the young began to take turns to play the commanders of the Han and Wei countries on the sand table, and reviewed and deduced the conquests in the Yongliang region of the Han and Wei countries for more than 30 years.

As a traverser, Guan Yi has the advantage that he is very aware of the strength of the commanders of the Han and Wei dynasties in each battle, the location of the follow-up troops, and has the experience of arguing with keyboard conductors in forums many times before crossing over. Therefore, in terms of sand table combat alone, Jiang Wei actually failed to take full advantage.

"Hehehe, hahaha, Zifeng Dacai! When the ten-year covenant between you and Your Majesty is completed, you can come to my Northern Expeditionary Army to be a deputy marshal!" ”

MB has laid the groundwork so much, and finally let this guy recognize the strength of my map military strategist.

Then, Guan Yi finally revealed his ultimate purpose this time.

"General, this Sima family has basically cleaned up the opposition forces in the puppet Wei Dynasty now, in order to facilitate their family to seek the dynasty and usurp the throne, it should be a big attack on my Han in about three or five years, right?"

"Well, I already know Zifeng's analysis two years ago. In Wei's view, this matter is not possible, but certain! ”

So you know.

However, Jiang Wei's next sentence made Guan Yi Lei very light: "Therefore, after accumulating enough money and grain in the past two years, I have to go on another Northern Expedition!" ”

MB you madman! It's not that Lao Tzu disagrees with the Northern Expedition, but it's really not okay to have frequent Northern Expeditions like you! Eight times in five years! Cao Wei's national strength can't stand this frequency, let alone a small and weak country like Shu Han!

"General, why don't we have the last deduction. This time, Yi came to play Sima Zhao? ”

"Oh? Good! ”

"Let's talk about the strength first, the puppet Wei standing army is four or five hundred thousand, and Yi is not too much to use more than 100,000 troops, right?"

"Of course. Hmm, if my Han responds, the mobile corps plus the Hanzhong Corps, 50,000 people. Well, plus the CD and the reinforcements from Nanchu, a total of 70,000 people? ”

You have a fart of 70,000 in four years, and you don't have more than 50,000 troops from start to finish. However, Guan Yi couldn't say this clearly, so he had to nod his head in approval.

"Well, if I were Sima Zhao, there would be three ways to be a soldier. 30,000 people all the way to Yinping, 30,000 people all the way to Wudu, and 50,000 people all the way to Hanzhong. Dare to ask the general how to deal with it? ”

"Actually divided troops to attack Yinping and Wudu? Zifeng, there is a problem with this: what is the pseudo-Wei going to do to attack Yinping and Wudu? If Hanzhong is not taken, even if Yinping and Wudu are captured, they will not be able to hold it after they retreat. Because of this, whether it was Cao Zhen or Cao Shuang back then, they all concentrated on attacking Hanzhong all the way"

"Otherwise, General, it is precisely because the puppet Wei attacked Hanzhong twice in the past, so that our army can concentrate a little on defense, so if Sima Zhao really comes to attack me, he will definitely learn a lesson and attack in multiple ways, so as to disperse the small strength of our army."

"Okay, in this case, I don't want Wudu and Yinping, and I will concentrate on defending Hanzhong with all my might."

Then the deduction of the two sides was mainly concentrated in Hanzhong, but the result of the deduction was that the main force of the Wei army starting from Chang'an could not pass through the various valleys. The Wei detachment coming from the flank of Wudu County could not capture Yang'an Pass.

"Hehehe, Zifeng. My big man has the solidity of serious danger. As long as I am blocked in Hanzhong, the enemy will not be able to help me. ”

MB, you also know that there is a lot of danger. But why did you then give up this advantageous natural terrain yourself?

At this time, Guan Yi took out the wargames representing Deng Ai's 30,000 people from Yang'an Pass and swung it to the southwest bridge......

"Well, that's a problem, but it's time for CD's reinforcements to arrive at the Sword Pavilion at the slowest at this time, right? As long as the Sword Pavilion is defended, this army will still not be able to advance an inch! ”

Four years after MB, for various reasons, the CD government's response was a rapid response. If you hadn't retreated all the way to the Sword Pavilion, the Sword Pavilion would have almost been lost! Hey, it's so painful, I can't say that!

Guan Yi thought about it, and then put the war games representing Deng Ai's detachment to the southwest and put them on the Yinping Trail, which was famous in later generations.