Twelve days have passed since the king chose to besiege the city, and the city is still doing two things.

One is to shoot the head of the city on the earthen ramparts, and the other is to step up the construction of giant nest cars in the camp.

But early in the morning of this day, a horse galloped from the west, and as soon as it reached the outside of the camp, it dismounted and galloped on the thorny road. The strictness of the military system of the Taishan Army can be seen. Even if it is really urgent, you are not allowed to run horses in the camp.

Fortunately, you Yi is also a person who walks well, and he quickly entered the Chinese army's tent under the high feather sash and ran all the way. At this meeting, many high-ranking military officials under the base camp were discussing under the big tent, discussing the matter of the Yan soldiers' eastward march to the area of Changshan Pass.

Since a few days ago, Zhang Chong had already learned from the spy report arranged by Jicheng that Lu Zhi led an army of nearly 30,000 and suddenly headed east to Changshan Pass.

At that time, the Taishan Army did not have a spy report in the area of Changshan Pass, so it was not clear what military purpose Lu Zhi led his troops to Changshan Pass, so he did not dare to act rashly, but quickly sent a spy to the area of Changshan Pass in the northwest to investigate.

The final result of the investigation turned out to be that Lu Zhi took the Youzhou Army to Changshan Pass to guard against the Xianbei people.

This result greatly exceeded Zhang Chong's expectations, he thought that Lu Zhi sent troops to the south to rescue Changshan, but he didn't expect him to go to Changshan Pass to guard against the Xianbei people.

In fact, this is because Zhang Chong is not very clear about the mentality and defense of the people in northern Xinjiang. For a frontier elite like Lu Zhi, the Xianbei people from the northern grasslands every year are much more hateful than Zhang Chong.

The blood feud between the two for several generations, whether it was Lu Zhi or most of the Northland men in the army, drove this military operation.

And what's going on here? Why did you go to Changshan Pass again?

In fact, Zhang Chong didn't even know the name of this pass before that, let alone know the stakes of this pass.

Since you don't understand, you naturally have to ask for advice. But Zhang Chong checked the big tent all around, but no one understood. Because they are the same as themselves, they are either Taishan people or Central Plains people, even if they are Jizhou people, but because the level is too low, they don't know the lines inside.

At this time, Liu Hui under the account suddenly recommended a person to Zhang Chong, who was originally stubbornly resisting in Xiangguo and was finally captured by his subordinates.

Liu Hui said:

"On the general strategy of northern Xinjiang, this person is unsurpassed."

So, with Liu Hui's recommendation, the frustration that had been stumbling in the baggage camp appeared in the big tent, and Zhang Chong finally understood why Lu Zhi went to Changshan Pass.

In fact, Changshan Pass was also called Hongshangguan in the Spring and Autumn Period. What does that mean? That is to say, the danger of this place must only be able to fly through the bird, and people don't think about it. In later generations, there is also a familiar name here, that is, the inverted horse pass, the mountain road is steep, and the horse falls for it, because of the name.

Why is this important?

In a word, it is the only passage from the Datong Basin to the Hebei Plain.

Speaking of which, the predecessor of Changshan Pass, that is, Hongshangguan, was actually not built by the Han people, but by the Zhongshan people of Bairong, and it was established to defend against the Zhao people at the beginning.

The great development of the Spring and Autumn Period and the Warring States period basically laid the basic pattern of China, which included both civilization and geography. Most of the territory of the Han dynasty today was developed during that period.

This is the case with Hebei, which was entrenched in about four forces during the Warring States Period. They are the Yan Kingdom in the north, the north-central part of Jizhou, that is, the Zhongshan Kingdom in the area of Changshan Country and Zhongshan Country today, and the Zhao State with Handan and Xiangguo as the left, and the Wei State in the area of Wei County today.

Therefore, the pattern faced by Zhang Chong is very similar to the situation in the early Warring States period. On his side were the original Zhao and Wei states. The Han army in Zhending and Jiumen was the Zhongshan State back then, and then Lu Zhi was the Yan State.

And not only is the geographical pattern similar, but the predicament that Zhang Chong is facing now is exactly the same as that encountered by Zhao Guo back then.

At that time, Zhao and Zhongshan were mortal enemies. The two countries were entangled in the south of the Hutuo River for nearly a hundred years, and finally Zhongshan finally retreated to the north of the Hutuo River, using the big river in Hebei, known as the Little Yellow River, as a natural danger to block the advance of Zhao's troops.

And this block really made it impossible for Zhao Guo to break through this line of defense.

And now Zhang Chong is too, he is really determined to attack now, and he will also face Feng Xun who is still presiding over the north of the Hutuo River in Jiumen, and Zhang Chong will also face this river defense at that time.

And how did Zhao Guoren finally win Zhongshan?

In fact, the people of Zhao have never been able to break through the defense of the Hutuoshui River, they directly bypassed the Taihang Mountain, directly attacked from the northern flank of the Zhongshan Kingdom, and only then did they take Zhongshan.

At that time, when the Zhao State was divided into the Jin Dynasty, it roughly divided the Jinyang Basin, the Xinding Basin, and the lands of Handan and Xiangguo. These places are Luliang Mountain on the left and Taihang Mountain in the middle, so it can be said that Zhao can only develop from the north and south.

At that time, its southern part was the Linfen Basin and the Yuncheng Basin, which belonged to the stronger Wei State and was not suitable as the main reclamation direction.

In the end, the Datong Basin in the north became the only option for Zhao.

But the Datong Basin is completely different from the rest of Shanxi, and even historically quite special, it is actually a boundary area belonging to the Hu and Han forces. In the future, it was here that the Northern Wei Dynasty combined the strengths of the Hu and Han dynasties to have the courage and strength to unify the north.

At this time, the Datong Basin was already full of Hu people. The nomadic people who came south from the northern grasslands for the winter migrated to the Datong Basin in waves, and even established a country here.

And the Zhao people's choice now has become, if they want to destroy Zhongshan, they need to make a detour from the Flying Fox Pass in the Datong Basin, and if they want to occupy the Flying Fox Pass, they need to destroy the Dai Guo here.

Originally, the country was destroyed, but the problem is that from the Xinding Basin to the Datong Basin in the north, there is no river running north-south.

And without water, it is impossible for the army to move.

Because people and animals, mass migrations all have to move along the water veins, because people need to drink water, and only by walking along the river can there be enough water for the army.

So, Zhao Guo used a treacherous trick, through marriage, and then deceived the king into Zhao Land, killed him, and took the land of Dai.

And once the Dai Land is taken, the Zhao people can enter the Laiyuan Basin of Taihang Mountain through the Flying Fox Pass here, which is the most important river valley in Taihang Mountain, and can be used as a forward base for either of the east and west sides of Taihang Mountain.

And from the source of Lai, and then out of the east of Taihang Mountain, there are two roads, these two roads are related to water, the north of the road, is the Juma River, and the south is Tangshui.

After crossing Wutai Mountain, Tang Water and Juma River meet again to a giant anchorage, that is, Baiyangdian. This road is the one that poses the greatest threat to the Greater Zhongshan region, and it can be said that it is straight into the waist.

And the people of Zhongshan were not stupid at that time, they also knew that this mountain road was too important, so it was here, and it was also a dangerous place not far from Tang County, and Hongshang Pass was built, which is now Changshan Pass to defend against the enemy who came out of the Flying Fox Pass.

Therefore, at this point, the people have already made it very clear to Zhang Chong, that is, Lu Zhi is not necessarily going to Changshan Pass to defend Xianbei, he is more likely to be guarding against the Taishan army.

Obviously, Lu Zhi was very relieved about the Hutuo Water Defense Line. With the efforts of Zhao Guo for a hundred years, he has not been able to break through the Hutuo River, how can you Taishan Army?

But Lu Zhi also knows how the Zhao people broke Zhongshan back then. So after he learned that the Taishan thief had taken the Jingchengkou, he began to worry that the Taishan thief would copy the old path of the Zhao people.

That is, from Jingchengkou to Taiyuan Basin and Yiding Basin, and then go north to Feihukou to pass through Changshan Pass, and go straight to the rear of Feng Xun.

Therefore, Lu Zhi directly moved his army to Changshan Pass and took the lead in blocking this hidden danger.

Even Fu Zhu said quite confidently, with his understanding of Lu Zhi, the former master, maybe Lu Zhi had already stationed troops in Bauhinia Pass.

Because of the two roads from Laiyuan, the south side of the mountain road is Changshan Pass, and the north side is Bauhinia Pass, from then on, you can go straight into the thistle.

At this point, Zhang Chong suddenly realized.

At this time, he was very emotionally lamented why Liu Bei had been ruined for half his life in history and had been defeated repeatedly, until he had a mastermind like Kong Ming to praise the painting.

Is Liu Bei not brave? Is it because Liu Bei can't win people? Is it because he can't take care of the soldiers?

Neither, because his strategic thinking can't keep up with Cao Cao. Cao Cao's education since childhood made him far surpass Liu Bei, a ranger, in terms of vision.

And now the same is true for Zhang Chong.

Is Zhang Chong uneducated? Of course not, in a sense, he is more literate than everyone else in this world. But even though he knows the interpretation of history, he lacks one of the most important things, that is, the details of history.

For example, Zhang Chong also knew about the Zhao people's destruction of Zhongshan by Fu Zhu, but he didn't know how this was geographically expressed. The historical narrative he listened to was more about the human dimension than the environment.

But for the Han people who frustrated them, it is different, they live in this space, and the mountains and rivers of this time and space are closely connected. They know where to go and where to go.

And the details of these life experiences are what the top wealthy families of this generation are good at. Because they really walked all these roads on their feet.

For example, Zhang Chong's frustration in front of him is like this, he has great ambitions since he was a child, he is accustomed to the geography of mountains and rivers, travels in northern Xinjiang, and grows his talents, which is also the fundamental reason why he can plan the defense strategy of northern Xinjiang for Lu Zhi.

After being frustrated, he Zhang Chong knew the reason why Lu Zhi moved to Changshan Pass. Otherwise, I am still speculating around there, and I don't know the essentials.

It's like playing chess, where a casual shot on the other side seems boring, but in fact it has blocked your only chance of winning, and that's the gap.

Zhang Chong was terrified, and then he realized the extent of advanced wisdom.

But Zhang Chong has an advantage, that is, he respects people very much, especially those who have things, in the past, he was a little dismissive of frustration, otherwise he would not have left people in the baggage camp to do accounts.

Now, Zhang Chong began to humbly ask for advice, he gave a plate of jujubes to Frustrated, and asked:

"Listening to what Mr. said, this king knew Lu Zhi's intentions. But this king still has a doubt, that is, why does this king's spy report say that Lu Zhi resisted the Xianbei people in Changshan Pass? ”

Fu Zhu is a typical gentleman, which is manifested in an inexplicable respect for a king like Zhang Chong. And at this time, when such an object of reverence suddenly shows great humility in speech and attitude, he will have an inexplicable feeling of being valued.

This is a kind of self-hypnosis in which the person who dies as a confidant. For 5,000 years, there have been countless such intellectuals. In the final analysis, if you learn literature and martial arts, you will be in the emperor's house.

So he hurriedly bowed, and then expressed his opinion to Zhang Chong for reference.

He said that there may indeed be Xianbei people attacking Changshan Pass now.

Because there are really Xianbei people outside Changshan Pass.

Roughly in the early years of the Eastern Han Dynasty, because of the Xiongnu rebellion, Guangwu gave up the counties in the north, and moved the people of Yanmen, Daijun, and Shangdang to the east of Changshan Pass.

Later, the Han dynasty broke the Xiongnu, but did not move the original people back to the original place, but attached to the attached Southern Xiongnu, and set up a Xiongnu Zhonglang to manage in the future.

How many Xiongnu people were in this area? No one can tell. It's just that I heard that there are 10,000 Xiongnu in Guanghyun County, and they can pull out 10,000 people to control the strings.

Not only that, but there are also Xianbei people in this area. Although the Xianbei people and the Han people have been fighting for a hundred years, the Xianbei people are not like the Han people are a mature country, it is a collection of nomadic peoples, who have the power to listen to whom.

Therefore, there are still a large number of Xianbei people who covet the richness of the land and live here together. And they are uniformly called Dai Ren Xianbei. Most of these people live side by side with the local Han people.

And the Han heroes often recruit Xianbei people as soldiers. But these people are not always obedient, because they live together with the Han Chinese, and the two will always break out into fierce conflicts.

At this time, the prefect of the Han people had to intervene.

Therefore, he speculated that there might be such a conflict outside Changshan Pass at that time, and Lu Zhi, as the head of the Han Dynasty, came forward to mediate this matter.

Although he said so, Zhang Chong instinctively felt that it was not so simple.

Because if Zhang Chong remembers correctly, wouldn't the Daijun Xianbei that he said be the one of the Tuoba family in the future? This Xianbei can be said to be the thug of the Central Plains Dynasty, so Lu Zhi's old puppet will not go to Daijun to recruit Xianbei people because he feels that he can't beat him.

Actually, Zhang Chong was wrong, the current Daijun Xianbei has nothing to do with the so-called Tuoba family.

But there is one thing that Zhang Chong is not mistaken, that is, our Lu Zhi went to Changshan Pass, killing two birds with one stone.

He not only went there to plug the loopholes in the defense of northern Xinjiang, but also went there to recruit the Xianbei and Xiongnu and Han heroes who represented the land.

Originally, the biggest risk of Lu Zhi's move was that he would send most of his military strength east to Changshan Pass, which would make Jixian unstable.

But he can't help it, those Hu people in the grassland are the heaviest forces, and only by recruiting strong soldiers and horses can they be effective. Relying on the authority of the Han family alone?

Sorry, it's not going to be good right now.

So before that, if Dong Wan could seize the opportunity to go north, maybe he would really catch Lu Zhi off guard.

At that time, Lu Zhi couldn't recruit many soldiers, and the rear was empty, so it was a good time.

However, this is not accurate, because if only Dong Wan sent troops across Hutuoshui, he would be completely alone. If you can't take Jixian, then you will be copied by the Hejian soldiers in the south, and you may really have to get rid of it.

Therefore, history has no ifs, everything can only move on.

Zhang Chong, tremble, let's see the wisdom of Lu Zhi.