"Your Majesty, please bring me the defense map of Mayi!" Zhou Yafu asked.

Liu Che nodded and gave instructions to Wang Dao beside him, who immediately went to get the latest defense map of Mayi.

After Liu Che came to the throne, the first thing he did was to turn the carrier of military maps and various technical atlases into blank paper.

At the same time, the surveying and mapping technology has been further improved, and many simple, but very effective surveying and mapping techniques have been applied.

At the same time, a large number of outstanding surveying and mapping talents have been cultivated in Lantai.

For more than three years, these talents have worked hard day and night. Today, they have basically completed the mapping of strategic points of the Northern Great Wall.

Therefore, the Mayi defense plan that appeared in front of everyone immediately attracted the attention of all the generals.

Contour lines, scale bars, and more diversified map rulers allow people to clearly see Mayi City and its surrounding mountains and rivers at a glance.

Han law stipulates that in areas close to frontier fortresses, there should be one lieutenant or scholar every 100 miles away.

In these areas, all the people are soldiers.

Xiangting uniformly armed men over the age of twenty.

In the area more than a hundred miles away from Mayi, the Han army deployed seven outposts and at the same time fettered three small nomadic tribes who had defected to the Han Dynasty.

These tribes usually graze cattle for the Han army and serve as mobile security posts.

During wartime, they served as guides for the Han army and to detect the movements of the Xiongnu army.

In the past, it was difficult to clearly mark these outposts and the activities of the nomadic tribes on the map.

We can only use some symbols that symbolize beacon towers to roughly identify certain areas.

People who are not familiar with the local situation may be confused when looking at the map. They have no idea at all the specific locations of the Han army's mobile outposts and beacon towers.

You also need to ask people who are familiar with the situation to know the specific local conditions.

However, it is actually difficult for people to understand the actual situation by relying on language alone.

Therefore, Chang'an often made mistakes in its judgment on frontier fortresses.

And this kind of mistake will lead to huge losses in wartime.

For example, eighteen years ago, 140,000 Huns rode into Kou Yunzhong and Yanmen. The emperor and ministers of Chang'an at that time made a huge mistake - they mistakenly believed that the military strength deployed in the north was enough to resist the Xiongnu army.

In fact, the Northland Army had an army of about 3,000 men at that time, but they were not on the battlefield at all. They were stationed in a safe area far away from the Central Road.

This misjudgment led to the fall of Chaonase, the death of the Northern Commander Sun Xuan in battle, and thousands of casualties among soldiers and civilians.

But now, with this detailed map, the tragedy of Chaonase will never happen again.

Through this map, even Liu Che, a military novice, looked carefully and wanted to eat the invading Xiongnu tribe. The key was Wuzhou Fortress.

Wuzhou Fortress is about seventy miles before Mayi. At present, it is only a small military fortress.

It was also a key stronghold for the Han army outside the Great Wall.

There is a Sima army stationed in the local area all year round, about five hundred people.

It looks like this is just a small fortress.

But in fact, Wuzhou Fortress once had a glorious past.

In the Qin Dynasty, this was a Qin army base comparable to Yanmen Pass. The Qin army stationed thousands of elites there all year round to monitor and attack the nomadic tribes on the grasslands.

In later generations, this fortress became even more famous.

The core of the Great Wall of the Northern Wei Dynasty was Wuzhou.

The stronghold of the Ming Great Wall, Datong City, was built near the ruins of Wuzhou Fortress.

However, since the Qin army abandoned Hetao, Wuzhou Fortress has lost its past glory.

Years of war meant that the Han army was unable to operate such a large fortress so far away from the Great Wall.

The Han army chose to retreat hundreds of miles and set up defenses in Mayi, forming an angle with Yanmen Pass and echoing each other.

"Your Majesty, if you want to completely wipe out the main force of the invading Xiongnu, I think you might as well order Xiliu Camp to come out of the Great Wall, raid the Xiongnu's baggage, cut off their backup, and force them to have to fight our army under the city of Mayi!" Li Ji looked at it!

After reading the map, he said.

In the past, he had been stationed at Yanmen Pass all year round, and he knew the local topography very well. He knew very well that if the Huns attacked Mayi, their route of action and the area where the old, weak and livestock would be stationed in the rear.

He stretched out his hand and measured it on the map, and then said with great certainty: "If the Northerners don't come, they will camp here!"

His hand was pointed directly in front of an unnamed lake on the grassland about a hundred miles north of Wuzhou Fortress.

"The three tribes of the Xiongnu have hundreds of thousands of livestock. They cannot settle here except here!"

In ancient times, when the army fought, even the nomads in the north needed to choose a rear area so that they could quickly supply the cavalry in the front.

Especially at this time, the Huns' cavalry did not have horseshoes, stirrups or saddles, which made their horses easily injured and infected.

This is also the reason why the Huns chose to invade in winter.

The low temperature in winter can reduce the chance of infection after the war horse is injured.

You know, even among nomadic tribes, war horses are very valuable property.

Liu Che listened to Li Ji's judgment and nodded.

Among the generals present, Li Ji is the absolute Yanmen expert.

He stayed there for twenty years.

Since he said this, then that's all.

But, is Xiliuying going to replace the Great Wall of China?

This made both Liu Che and Zhou Yafu hesitate.

In the long period of more than fifty years, the Han army had never had the experience of going deep into the grasslands and attacking the enemy by surprise.

Xiliu Camp has never left the Great Wall and entered the grasslands.

Liu Che and Zhou Yafu had to worry that they might get lost on the vast grassland.

This is not impossible.

If you look through the history books, you can see that even the experienced warriors under Huo Qubing have lost their way.

As for Li Guang, who is now in this palace, he is a professional who has lost his way.

Even if you are a traveler in later generations, if you go deep into the grassland, you will still get lost if you don't use the GPS navigation system.

This is because there are not enough eye-catching landmarks on the grassland, and there is a lack of positioning tools.

Once Xiliuying gets lost, it may have serious consequences.

Being lost meant that they were not only unable to complete the mission of surprise attack on the Huns' baggage troops and cut off their backup.

It is more likely that this army, this trump card that may determine victory or defeat, will miss the entire battle.

Sun Tzu's Art of War said: Calculate defeat before calculating victory.

Liu Che had to consider the worst outcome.

Zhou Yafu was even more uneasy.

Zhou Yafu was assured of the combat capabilities and technology of his old army, Xiliu Camp.

However, after all, Xiliu Camp has never experienced an expedition of hundreds of miles. If something goes wrong, the consequences will be disastrous!

Liu Che and Zhou Yafu looked at each other, and the monarch and his ministers said almost in unison: "Order (your majesty) King Donghu to come out as a guide to lead the way to Xiliu Camp!"

Lu Tazhi, the king of Donghu, definitely knows the way.

As long as Lu Tazhi can agree to this, then there is no doubt that Xiliu Camp will get lost.

even……

In Liu Che's heart, there was another crazy idea: "Let's just let Lu Ta's jump happen!"

If Lu Tazhi rebelled, he, his Donghu tribe and two closely related vassal tribes would be able to immediately cut off the Xiongnu tribe in the Hetao area, preventing them from looking at each other.

It is even possible that after cooperating with the Han army to annihilate the Xiongnu tribe that invaded Mayi, they may continue to attack the west.

Liu Che's eyes glanced at the three strategic locations on the map of the Han Dynasty, which were only marked with a name, but without specific distances and directions - Yinshan Mountain, Rouge Mountain, and Qilian Mountain.

If the Han army can attack or even occupy these three places.

Then, it would be tantamount to pronouncing the death sentence on the Xiongnu forces in Munan.

Historically, Huo Qubing disintegrated the Xiongnu rule in Munan through the battle at Rouge Mountain, and then turned around to recruit Kunxie and Xiutu.

A genius of a generation, single-handedly surrendered tens of thousands of Xiongnu tribesmen and obtained 1.5 million livestock.

But Liu Che knew that now was not the time.

You have to eat the food one bite at a time, and trying to get rid of the Huns all at once is not only unrealistic, but it may also overwhelm you.

Now, we should only consider leaving the Aries, Loufan and Zhelan tribes under Mayi City forever.

These three tribes have always been Shan Yuting's loyal dogs and the main force and vanguard of the southern invasion.

Eliminating these three tribes will intensify the internal conflicts among the Xiongnu.
To be continued...