From the geography on the sand table, it can be easily discovered that the dividing line between Munan and Mubei was divided into two halves by a Gobi desert that fell from the sky.

This curtain stretches across the north and south, separating the Mongolian Plateau from the Inner Mongolia grassland.

The Gobi, desert and wasteland constitute the mainstream of this area.

But this is not an absolute death penalty.

Otherwise, nomadic peoples would not be able to migrate back and forth between the south and north of Mu for thousands of years.

What changed this situation was a snow-capped mountain thousands of miles away.

Wolf Residence Mountain!

The Huns say: Wolf lives in the cave mountain!

The Gonglu River, which originated from Langjuxu Mountain, winds eastward all the way, bringing the snow water from afar to this barren land.

However, it does not last all year round, and it will keep breathing.

It will stop flowing every winter and early spring.

It was not until late spring of the following year that the sun melted the snow and brought the river to this desert.

As a result, seasonal oasis were formed.

Yayuan is a pass just between the Gobi and the desert, located in the east stream of the Gonglu River Valley.

Whether it is the people from Mubei, they want to go south, or people from the south want to go north.

This is a must-pass place.

It is the most suitable springboard.

There is no need to look at the satellite map, just look at the geography presented in the sand table in front of you. Zhang Yue knew that if you want to fight in Mubei, you cannot occupy this place, it is almost impossible to complete the task.

because……

To cross the vast sea, you must attack upward along the river valley formed by winding along the Gonglushui River.

Just like Huo Qubing did twenty-seven years ago.

First fight against Yayuan, then head north, cross the Gonglu River south, and conquer Nanhou Mountain (now Daerhan Mountain), and then stepped into the core land of Mubei.

As long as the Han army can attack here.

Then, the entire battle situation will suddenly become clear.

Why?

Because although Nanhou Mountain is not high, it is the highest point of the bend of the Gonglushui River.

It is also a strategic location that perfectly cuts off Yanran Mountain (now Hang Ai Mountain) and Jinshan Mountain (now Altai Mountain).

Standing on Mount Nanhou and looking northwest, you can see the direction of the Yuwu Valley (now the Tula Valley), which is the lifeline of the Huns in Mubei.

Turning to the north, what caught my eye was the valley of the upper reaches of the Gonglu River.

That is the road that Huo Qubing Fenglang Juxu Mountain took.

pity……

Now the Weilu Corps is like a roadblock, lying across the road of this great expedition.

I want to cross the Gonglu River, cross the vast sea, reach the Nanhou Mountain, and move along the idol's journey back then.

The Weilu Corps, which lies on both ends of the Yayuan and on the Gonglushui River, is Zhang Yue’s biggest challenge and obstacle.

His eyes were staring at Yayuan.

This magical land.

Zhang Yue asked slowly, "In the opinion of all the officials, how will Wei Lu and Gu Yan deploy troops?"

Xu Xiangru thought for a while and said, "If Shizhong Gong, if the last general is Wei Lu, he will definitely only arrange a small number of cavalry on the Yayuan for warning, and arrange the main force on the north bank of Gonglu River!"

"Why?" Zhang Yue asked.

"Shi Jung-in, please see..." Xu Xiangru pointed to the geographical direction of Yayuan and said: "The cliff is wide and has a territory of hundreds of miles. If the army is placed here, it will be difficult to control and concentrate troops to deal with possible situations..."

"It's not the case on the north bank of Gonglu River. This place is narrow and long, so you can station a large army!"

"The most important thing is that it is easy to defend but difficult to attack, not like Yayuan. If you encounter an attack, it will be difficult to react quickly!"

"Besides, the terrain is higher than that north of the Gonglu River. If an enemy attacks from the south, it is like our army, in fact, attacking from the bottom upwards and advancing, the consumption of one's own physical strength will increase!"

"When the attack arrived at the shore of Gonglu River, I was probably exhausted!"

"What's more, guarding the natural danger of Gonglushui, any enemy attempts to cross the river to attack will be severely attacked by the cavalry arranged on the north shore!"

"Attack halfway through, it is not a unique method in China!"

"Therefore, the generals deeply believe that Wei Lu will inevitably place the main elite on the north bank of Gonglu River, and be treated solemnly, and will only send a small number or part of the troops to garrison Yayuan as a warning!"

Zhang Yue listened, nodded and said, "So, General, it makes sense!"

"But... Wei Lu and Xu Yanfeng really bowed Yayuan to let go?" Zhang Yue expressed doubts about this. He picked up his sword, pointed at the Sandpan Cliff Yuan, and pointed to the northwest. The unconstructed part was said: "Wei Lu and Xu Yanfeng are both elites of the Huns. They must be much clearer about the geography and strategic landforms of Mubei and the Huns than we do!"

"They will definitely know that if they bow to Yayuan and want to let go, if our army does not cross the river, they will turn around and attack from Yayuan to the east, cross the vast sea, and then they can attack..."

Zhang Yue's sword slashed hard in the air east of the sand table, and spit out three words in his mouth: "Yu Wushui!"

"And Zhao Xincheng located on the banks of Yuwushui!"

Today's Yuwushui is the Tula River in later generations.

Anyone can just find out the map and take a closer look at what is around the Tula Valley, and you can know how important this area is!

You can understand why Li Guangli was so fascinated by Yu Wushui.

In fact, the decisive battle in Mobei twenty-seven years ago was divided into two battlefields: east and west.

Huo Qubing on the Western Front achieved an unprecedented and unprecedented expedition.

In fact, the Wei Qing army on the eastern front was actually an attack on the life and death of the Hun Empire.

In fact, during the decisive battle in Mobei, the Huns committed strategic deception before the war.

By frequently mobilizing and actively demonstrating their troops, the Han army believed in the illusion that the main force of the Xiongnu Shanyu was in Gonglushui. In fact, after completing this strategic deception, Yin Zhixie and Zhao Xin quickly led their main force of the royal court and the main force of the Youxian King to cross the vast sea and enter the Yuwushui River Basin.

At the same time, the main force of the Left King was concentrated on Gonglu Shui.

This is an ancient and simple tactic.

Tian Ji is racing horses.

Their strategy was to use their inferior horses to hold the elite aces of the Han army and the cavalry cluster of Huo Qubing's troops.

At the same time, we concentrate all our strength, which is what they think is the best horse, on the southern foot of Yanran Mountain (Hangaishan South), waiting for the main force of the Han army's eastern front to come to our door.

The plan cannot be said to be unsuccessful, and the strategy cannot be said to be exquisite.

However……

After much calculation, Yin Zhixie and Zhao Xin both calculated one thing wrong.

Although the Wei Qing army did not have as many elite cavalry as Huo Qubing's cavalry cluster.

However, Wei Qing's experience on the battlefield and command art were not worthy of fame.

More importantly, although the army of the Wei Qing army was not as good as Huo Qubing's troops, it was still more than enough to fight the Huns.

In addition, God helped, a strong wind suddenly blew up when the Huns attacked the most violently.

All the plans will be in vain.

So the decisive battle in Mobei, and the Huns were not only penetrated by Huo Qubing on the Western Front (this is a blow they can bear if they have calculated it.

).

As the eastern front of the national war center, it was also a complete defeat.

If Wei Qing hadn't understood Mubei's geography at that time, he would not dare to pursue it rashly.

Then, Yin Zhixie may be invited to Chang'an as a guest.

Twenty-seven years ago, Yin Zhixie and Zhao Xin were able to use Tian Ji's horse racing strategy.

And I know deeply what the lifeline is?

Twenty-seven years later, can Wei Lu and the King of Guyan Xu Yanfeng not know?

Did he dare to give up Yayuan and expose his softest heart to the Han family?

Do they dare to gamble that the Han army did not dare to cross the vast sea, so they rushed to Yu Wushui and went to his heart to play?

"What does the servant mean?" Xu Xiangru asked respectfully.

"If I were Wei Lu..." Zhang Yue closed his eyes and reached out to rub the Yayuan and Gonglu River Basin on the sand table for a while.

The map of future generations in my mind gradually coincides with this sand table.

Although the geographical changes over the past two thousand years can lead to changes in the world, the large terrain direction and the large geography are the same.

In later generations, China map was in the shape of a rooster.
To be continued...