Late at night, the fire was bright in the Julu Army camp and there were busy figures everywhere. Compared to this, the central army was in the darkest place.

The central army tent was set up in a broken barn. The barn was large and empty enough, and was suitable for use as a center. In the barn, Li Mengxi and Liu Bei and some senior officers discussed the future combat strategy overnight.

The situation in the enemy and us is that the Julu Army has a complete strategic advantage and its own side is invincible. It is time to consider the enemy more.

Nanpi City had a lesson from the past. At that time, Liu Bei's lonely army firmly attracted the enemy to Nanpi City for a month. Later, Li Mengxi arrived at the main force. Seeing that the enemy was about to be attacked and wiped out, the enemy actually abandoned the city and fled. Due to insufficient expectations for changes in the enemy situation, whether it was Liu Bei or Li Mengxi, they failed to set up ambush early or arranged a blockade in time, and let the enemy go for nothing. This mistake brought about at least a thousand losses.

With the lessons from the previous chapter, I have more experience this time. The enemy is trapped in a siege battle. The Julu Army has successfully threatened its rear, leaving the enemy in a state of being attacked from both sides. The enemy is even more embarrassed last time, and the possibility of the enemy leaving the city to escape was far greater than the last time.

In order to prevent the enemy from escaping, everyone agreed that they should send troops to encircle and annihilate them as soon as possible to prevent the night from getting too long and dreaming.

According to the information collected now, the enemy's siege is extremely large, which is more than multiples of the Julu Army's strength. The difference between the two sides is this. If the Julu Army can still have the upper hand in defense, relying on the chariot formation to defend and wait for attack is also completely advantageous. However, if it takes the initiative to attack, especially to try to annihilate, the difficulty is a bit great for the Julu Army.

His eyes remained on the map, and amid the swaying fire, Li Mengxi's eyes stopped at [Jicheng] for a moment. He thoughtfully, looked up at everyone and said, "Our army alone fights alone, even if it is a good match, it may be difficult to fight and suffer huge casualties.

But what if, add the Jicheng official army?"

Li Mengxi pointed at the place where Jicheng was on the map, "If the defenders can fight with our army, our two sides, one is on the back of the enemy and the other is in front of the enemy, and the other is on the enemy's side, how can the enemy be defeated?"

After the Jicheng Guards were included in the combat plan, the whole game of chess was alive.

The remaining problem is that we must cooperate with the Jicheng defenders, but how to cooperate is the primary issue.

The Jicheng defenders did not know the Julu Army's combat plan. When the Julu Army launched an attack on the enemy outside the city, the defenders might seize this opportunity to go out of the city to help double-team the enemy. However, it is also possible that the defenders' generals have no strategic vision and do not know how to go out of the city to support them. The situation is not determined, and everything may happen, and there is no surprise on the battlefield.

In order to ensure that the defenders can cooperate with their own operations, the first step is to let the defenders know the Julu Army's intentions. Jicheng is now surrounded, so how to inform them is difficult.

Liu Bei proposed an idea, saying that he could send cavalry to break through the enemy's blockade and rush under the city wall, and shoot the arrow books into the city. If the enemy gets the arrow books, he will naturally know our intention to fight.

This is a feasible method, but Li Mengxi felt that this method was risky. He sent a cavalry team to risk the battle. It was certainly feasible to be able to overcome the enemy's blockade, but if it could not be broken, the cavalry team would suffer heavy losses. Moreover, if the cavalry team was trapped in the formation and the arrow book was intercepted by the enemy, the attack plan would fail.

The current situation of the Julu Army is that the Julu Army does not have too many cavalry units, and the only cavalry force is Volunteer cavalry, and Volunteer cavalry has great political value and cannot be easily damaged. This makes it possible to send cavalry teams to force the enemy to send letters, but the gain is not worth the loss.

At this time, Chi Zhier, who was silent on the side, spoke out. Chi Zhier slapped her chest and took over the work of sending arrows. He said that he didn't need others to help, just one person, one man, one gun, one bow, and one can kill the city.

Chi Zhier wants to ride alone to the formation.

Li Mengxi couldn't help laughing. He was not laughing at Chi Zhier overestimating his abilities. Chi Zhier was a famous cavalry general in the Western Liang Army. Perhaps he really had the ability to ride alone to attack the formation. The reason why Li Mengxi laughed was that he felt that there were generals in his army who were willing to sacrifice his life, so he laughed.

On this occasion, Li Mengxi laughed for no reason and was a little puzzled. Liu Bei was afraid that everyone would misunderstand Li Mengxi's meaning, so he came out to smooth things out without a trace. Liu Bei smiled and said to Chi Zhier, "The general is so skillful in bowing and horses, so there is no need to say much. It's just that the advantage is clearly in our army. Why should we let the general take risks in person?"

Liu Bei called the title of "general" and made Chi Zhier laugh suddenly.

Pointing at Li Mengxi again, Liu Bei smiled and said to Chi Zhier, "Let's just listen to the military advisor's tricks. It would be better if he didn't force himself to break through."

Everyone's eyes gathered over, and Li Mengxi thought.

In other words, in addition to the book of arrows, there are really ways to convey information to friendly forces without breaking through the formation, such as Kongming lanterns.

However, Kongming lanterns are easy to be good, but they are not suitable for use now. The signal that Kongming lanterns can show is too simple. When you use them, make an appointment in advance. Raising one lamp means moving forward, two lamps means retreat, and three lamps means sticking to the point of being able to use Kongming lanterns to convey these three simple commands. However, for the Jicheng defenders, when a few lanterns rise, the defenders cannot understand what it means.

The Julu Army and the Jicheng Guards had no tacit understanding each other, so they had to be clearly straightforward to convey the message. Thanks to the era of information development, Li Mengxi had seen people use fireworks to form fonts, some use unmanned institutions to form fonts, some use kites, and some use Kongming lanterns. The specialty of Tagou Martial Arts School is to use hundreds or thousands of people to form text and pictures, etc.

There is a way to convey messages to the Jicheng defenders. The first method is to place the Kongming lantern and form a group of characters with Kongming lanterns. Just use the four words "out of the city and attack together", and the defenders will know their intentions when they see it.

There is a second method, and you can use a big kite to fly to the sky to make up your handwriting.

The third method is to use soldiers to shape the characters to display them from a distance.

This chapter is not finished yet, please click on the next page to continue reading the exciting content later! Among these three methods of transmitting signals, Li Mengxi prefers to use Kongming lanterns and sending messages with kites. Both methods are not difficult to operate. The army can immediately summon craftsmen to make Kongming lanterns with bamboo strips and paper, but kites are a little difficult.

If you look at the two methods of Kongming lantern and kite, the difference between the two is that the Kongming lantern is not fixed, which is not conducive to use in strong winds. Kongming lanterns are easily blown away by the wind in windy weather. Secondly, Kongming lanterns are more conspicuous at night, while the kite is easily made huge in size, and the kite is more conspicuous during the day; thirdly, the kite flies higher and the distance to transmit information is longer; fourthly, the kite is fixed with ropes, easy to control and has stronger wind resistance.

By comparison, the Kongming lantern at night is cost-effective, and the kite during the day is the best price-effective, and the one with the best cost-effective combination of the two, and the best effect is to hang lanterns by kite hanging.

This creates a new problem. The message is transmitted in Ming language, which can be seen by the defenders and the thieves siege. The thieves can see the information and prepare for it, and the internal and external attacks will lose their suddenness.

At this moment, Li Mengxi thought of using the Ming language encryption method.

There were smart people like Yang Xiu in the three countries at the end of the Han Dynasty. Cao Cao used the use of idle ribs as a curfew order, and Yang Xiu immediately guessed that Cao Cao was going to withdraw his troops.

Then, in the future, send a message similar to "small ribs" to the defenders of Jicheng. If there are smart people in the defenders, they can immediately guess the deep meaning from the superficial news.

The message that needs to be conveyed in the future is that the message of "going out of the city to attack together" is simply the word "joint attack". So, how should we hide these two words in the Ming Dynasty and how to ensure that the defenders can guess the real information? Li Mengxi thinks this is very similar to a game of guessing words.

Li Mengxi briefly explained the content of the riddle to everyone, and then mobilized everyone to conceive the hidden puzzle method of "joint attack". At this moment, cultural level is very important. Among the officers with high cultural level, those with high cultural level have begun to frown and ponder, and those with low cultural level, such as Chi Zhier, scratching his ears and heads.

After a long time, the result of everyone's thinking was that the word "he" was split and divided into three characters. When the defenders saw these three characters, they pieced together, and then they became the word "he". What does he mean? After a little thought, it means a combination attack.

Such a simple riddle could not satisfy Li Mengxi. Li Mengxi thought that riddles had to be perfected by combining text, social customs at that time, and other factors. Li knew that he could not be familiar with the traditional Chinese characters in the late Han Dynasty, nor was he familiar with the customs of the late Han Dynasty. Obviously, he could not produce too clever riddles. Looking at everyone, Liu Bei would forget about the books and characters that Liu Bei could read and write, but Liu Bei was obviously not a person with profound knowledge, so it was difficult to design clever riddles.

Li Mengxi thought a lot of things at the moment. He thought of the later World War II, when Britain summoned a large number of literary experts and folk culturalists to crack Germany's telegram passwords. In the past, he only regarded this as a story, but now he understands that there are useful and very useful information hidden in this story.

The UK convened a large number of text experts, cultural experts, and folk scholars to crack the password. The information contained in this is that the password can be compiled with folk cultural content, or the contrary can be reversely cracked with folk cultural content.

Under the background of social customs and folk culture at the end of the Han Dynasty, Cao Cao felt that he could not advance or retreat, and would think of a useless person. At the same time, when Yang Xiu heard the word "王说", he introduced that Cao Cao had the intention to withdraw his troops. This was a process of code compilation and cracking that occurred in a specific cultural context.

In a foreign cultural context where there is no chicken and no chicken-eating culture, when a foreign country steals the information of "chicken ribs", it is difficult to understand what the word actually means. Therefore, during World War II, Britain convened a large number of folk culture scholars to crack the German passwords, which was a very useful move.

The inspiration for Li Mengxi from later events combined with the immediate events was that when compiling and encrypting information, as well as cracking enemy intelligence, we need senior talents who are proficient in classics, history, and collections of folk culture in various places all night long.

Suppose that Yang Xiu was an enemy side with Cao Cao. When the newly replaced curfew order in Cao Cao's army was the word "sheep", this piece of information happened to be intercepted by Yang Xiu's side. Then, through these two simple words, Yang Xiu, a guy with extremely high IQ, guessed that Cao Cao intended to withdraw his troops. Now, he completely guessed Cao Cao's strategic intention, and hit the "knowing oneself and knowing one's enemy" in military strategy. Through the word "sheeping oneself and knowing one's enemy" only, Yang Xiu used his own strength to make his own strength a chance of victory. It can be said that he changed the direction of the war with his own strength.

Li Mengxi knew who should be responsible for the compilation and cracking of intelligence. It was extremely suitable to find Yang Xiu. Even if he couldn't find Yang Xiu, he would have to find someone similar to Yang Xiu.

Deciphering intelligence is undoubtedly suitable for talents with high IQs. Yang Xiu is undoubtedly a guy with extremely high IQs. In later generations, deciphering passwords was also handed over to a large group of top mathematicians. Guys with high IQs have bonuses to do intelligence work.

In a moment, Li Mengxi had already built the Julu Army's password compilation and cracking department in his mind. This department must have many specialized talents who are proficient in literary and classics and folk culture. In particular, the people in this department have a high IQ, so it is best to be as smart as Yang Xiu.

Putting aside the matter of the cryptographic department, Li Mengxi felt that the riddles that everyone had come up with were not very safe. The combination was simply split and separated. If the defenders could guess it thoroughly, the enemy would naturally be easily guessed, which was also troublesome.

Li Mengxi couldn't help but think that if there was a way to get information to the Jicheng defenders, but the enemy could not see it, that would be great.

But, where does the law come from?

If you encounter difficult and clueless problems, you might as well analyze them thoroughly.

Use the control variable method to analyze all the components of Jicheng defenders and siege enemy troops. If you want the defenders to know but the enemy does not know, the method must be within the same factor that the defenders have but the enemy does not.

Using the control variable method, all the components of the defenders and bandits include cities, soldiers, camps, manpower, materials, and other factors.

In subdivided, the small components of the major factor of the army include: the types of troops, armor, force, etc. The types of troops are divided into infantry engineers, etc. The forces are divided into the number of troops and the composition of the troops.

Materials are divided into grain, grass, other materials, etc.

Camps are divided into camp size, camp distribution, camp composition, camp location, camp direction, etc.

...

Everyone looked at Li Mengxi with paper brushes and writing constantly. After writing for a long time, the paper was densely written and still writing. Liu Bei took a curious look and saw the extremely complex tree-shaped picture of branches and branches drawn by Li Mengxi on the paper.

A group of people were waiting quietly.

After a long time, Li Mengxi raised his head, frowned, and muttered, "It's a city."

After analyzing all factors, only the city is the biggest difference between the defenders and the bandits.

But, how can the city make the defenders visible but the bandits not visible? I don’t know which factor in the city can play a role.

Continue to analyze and continue to exhaust.

Exhausting the city, the constituent factors of the city, city walls, battlements, trenches, arrow towers, city gates, military caves, etc.

Battlements have factors such as quantity, direction, height, size, etc.

The city gate has quantity, direction, material, size, thickness, etc.

The trench has width, depth, length, state, etc.

There are many, locations, and distributions of arrow towers...

After working exhausted for a long time, and then analysed one by one for a long time, finally, the answer came out.

"It's the height." Li Mengxi breathed a sigh of relief.

The city wall has a prominent height advantage. The height advantage of the city wall makes the defenders' vision extremely broad and have a condescending perspective. This makes the Julu Army and the besieged enemy on the flat ground, the Julu Army put a big character on the flat ground and blocked the characters in a circle. The thief army on the flat ground cannot see the characters, but the defenders on the high side of the city wall can see them condescendingly.

There is a way to make the defenders visible and make the enemy invisible. Just abandon the Kongming lanterns and kites that are visible to both sides, and replace them with the information on the ground.

The problem is solved easily, and the rest is the details.

Placing fonts on the ground is easier than making a Kongming lantern. You just need to pull the vehicle over or pull the soldiers over to make a huge text and picture.

What we need to ensure that it is 100% not seen by the enemy and 100% seen by the defenders. In order to prevent the enemy from seeing it, we must test it. At dawn, we can put a few big words on the ground, and then let people walk hundreds of steps away and stand on the flat ground to see if they can see it. Then, from the perspective of the defenders, we can make people climb up to see to determine the visible distance of the text and pictures.

Other perfect details include terrain that needs to be considered. It is best to find a terrain that is higher than the enemy's army, so that it will not be easily seen by the enemy.

If the high terrain is difficult to find, it is not difficult. Julu Army has a method of filling trenches quickly, and naturally there is also a method of quickly starting a high platform. Stacking Xuanwu chariots and various vehicles can be used to build a high platform in an instant. When the high platform is formed, soldiers stand on the platform and arrange them into fonts, which has a height advantage. The bandit army is limited by the perspective of the flat ground, while the defenders are still condescending and can see clearly.

At this point, there is a way to make the thief 100% visible, and at the same time, there is a way to make the defenders visible.

Li Mengxi revealed the method and everyone felt it was quite strange.

Liu Bei pondered and said something wrong, "Although the defenders can see them, but even if they see them, they are still two people who are willing to go out to help me. How can they know in detail?"

Li Mengxi touched his chin, thought for a moment, and looked at Liu Bei, "Just ask?"

Ask the soldiers to put in fonts, put out a line of big characters, and ask the city, "Would you like to come out to help?"

[If you receive it, please raise three lanterns on the top of the city as a reply]

If three lanterns rise at the top of the city, it means that the enemy has received it.

Then ask, [When will your defenders attack? Where will they attack? How many people will attack?]

Let’s make an appointment with the defenders and make a detailed combat plan. At that time, both sides will attack at the same time. Although the two first-time troops cooperate, they will cooperate closely like a family. The army is in concert and the same force will have several times the effect. What will happen to the enemy? I can’t think about it anymore.

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