Yingcheng was puzzled.

He had never heard Liss come in such a panic.

It seems that something big has happened.

Although he was sleepy, he still got up to clean up and passed Li Si to come.

There was no need to summon him, and Li Si broke into the front hall under the guard of the black armor guard.

"The prison is in the apse, and Duke Li invites him to come with the slaves." The chamberlain quickly led the way.

Li Si was very anxious to see Yingcheng, and took the lead in the inner chamberlain and walked towards the apse.

"The prison hasn't slept all night?" Seeing that Yingcheng was in a decadent spirit, Li Si couldn't help frowning and asked.

"Li Gong, what's wrong?" Yingcheng didn't reply, but asked.

"The prison country still has to rest, and there must be no more rewards for Yongcheng." Although Li Si said this, he did not have the intention of retreating, but had to have a big matter to discuss and let Yingcheng retreat from the four inner servants.

Yingcheng was puzzled, but according to Li Si's meaning, he retreated around.

In general, when it is necessary to discuss important matters, it is not allowed to record them.

But it was Li Si, seeing that there was no one around, his eyes fell on a map of the world, and he quickly said in a deep voice:

"This is the Great Wall defense line, that is, the north, Jiuyuan, Yunzhong, Yanmen four counties, the Great Wall army is mainly stationed in the Jiuyuan Linhe, in this way, the formation of my Daqin's northern defense line, west to Longxi, east to Yunyang, Yanmen Pass, according to which the city wall is built according to the mountain, with the mountain pass as a military fortress, so far, but retreat to the Xiongnu 800 miles, so that the north is stable."

"The land of Kyushu is in turmoil, and the Xiongnu are also rapidly integrating and growing, among them, the Xiongnu head Mandan is not much in the integration of the Xiongnu, and crossed the Yellow River, occupied the land of the Hetao, Meng Tian attacked the Xiongnu several times in the north, has driven the Xiongnu out of the Hetao, retreated outside the Yellow River, and made the Xiongnu retreat in the vast northern desert, chasing to the foot of Yin Mountain."

"It can be said that with Meng Tian's 300,000 troops stationed in the northern defense line, it is impossible for the Xiongnu to cross the southern defense line from the northern defense line, but it is also difficult for my Great Qin to destroy the Xiongnu."

"Although my Great Qin has cavalry that can fight well, the Xiongnu are better at cavalry, and the war horses are far better than the war horses of the Qin State."

Yingcheng didn't understand that early in the morning, Li Si came to analyze the situation of the Xiongnu with him.

Arguably.

Daqin basically did not suffer from the Xiongnu.

The Xiongnu were still in the primitive nomadic war, and the Qin State had stepped into the large-scale ordnance equipment, the Xiongnu war horses were excellent, but the swords of the Qin State were sharper.

Since Meng Tian conquered the Xiongnu in the north, he set out from the north, out of Xiaoguan, all the way to Helan Mountain, at the foot of Yin Mountain, and built the Great Wall defense line at the foot of Yin Mountain.

And the Xiongnu, just began the road of unification, the Xiongnu really began to become stronger is the son of Manshan Yu from the beginning, after Mao Dun killed his father and usurped the throne, coupled with the internal turmoil in Qin, there was no time to take care of it, which made the Xiongnu a scourge for hundreds of years in the north.

But now.

It is not an exaggeration to describe the northern defense line as impregnable.

Although Yingcheng knew it in his heart, seeing that Li Si was so solemn and had a very important analysis, he also quietly moved with the place where Li Si's finger was pointing.

As Prime Minister Zuo, Li Si is not responsible for military affairs, but he knows military affairs very well.

"Meng Tian was trying to succeed in a battle and took the initiative to go out to pursue the Xiongnu, but this proposal was rejected, with the national strength of the Qin State at that time, it was not to support Meng Tian to travel long distances to fight."

"However, Li Xin's Poyan Camp and Li You's Sanchuan Battalion, after the breakdown and recuperation, followed His Majesty's western tour, went straight to Xue County from Dongxuan, and transferred to Dongjun, and wanted to go from Handan to Hengshan and go to Yanmen Pass."

"At that time, there will be 500,000 troops gathered in the north to conquer the Xiongnu."

"In the north, there are two enemies, the Xiongnu and the Donghu people, the Donghu people are in the northeast of Yuyang, where there is vast white snow, and the Xiongnu are in the north of Daqin, where there is a long yellow sand." Liston paused, and continued:

"This is the result of several oppressions by my Qin State, and it is also the current pattern in the north."

"The old minister didn't sleep all night, and he couldn't figure it out, but, this morning, the old minister stared at the territory of the Huns, and a bad cold came to him, and he felt cold all over his body."

Yingcheng looked at Li Si suspiciously.

Li Si said worriedly: "Zhao people, there is half a Donghu bloodline!" ”

"The Zhao people are closer to the Hu people than the Central Plains people."

"Since Zhao Wuling King Hu Fu rode and shot, learned the Hu people, contained the Hu people, and led the Hu people, which gradually encroached on Shangjun, Yanmen County, Yunzhong County and other places, since then, Zhao has half of the countrymen, is the Donghu people and the Huns."

"Hu people repeatedly, the Xiongnu are even more respectful of the strong, since the Zhao State twins seized the national strength weakened, Zhao State mastered Yanmen County, almost more than half of its troops, even when my Qin State destroyed Zhao, the Yanmen defenders did not move south, Li Mu is the same, when I Qin State attacked, Li Mu will be transferred back, after the war is calmed, Li Mu will need to personally guard Yanmen County."

"This is similar to the Longxi County of my Qin State, the Zhao State can use the Hu people, but it also needs to be dike at all times to prevent the Hu people from rebelling, but if there is really a disaster to destroy the country, it can also be relied on by the Wu tribe, which is a last resort."

"Although Yanmen County is now in the hands of my Qin State, if Zhao State wants to restore the country, it must rely on the Donghu people and even the Xiongnu."

Hearing Li Si's tirade analysis, Yingcheng's gaze gradually became shocked.

Or rather.

He knew better what Lees was trying to say.

Five nonsense!

That's right, although different, but I'm afraid, history has to be played out in advance.

During the Three Kingdoms period, in order to seize the Cao family, the Sima family led the Xiongnu, Xianbei, Qian, Qiang, Di and other Hu people to the south, chaotic the Wei State, seized the Wei State, and established the Western Jin Dynasty regime.

Although the reason for this is related to the Rebellion of the Eight Kings, the force that broke the Qiankun was the Hu people who went south.

And now.

This has always been neglected, the rest assured northern defense line, a thousand miles of embankment, if there are internal thieves to lead the way, the Hu people can completely bypass the northern defense line, drive straight in, and threaten the safety of Guanzhong.

"In order to establish the northern defense line, 500,000 prisoners were forced into labor, and 300,000 troops were deployed on the Great Wall defense line, and this also led to the entire north, including Shangjun, Taiyuan, Hedong, and Shangdang, in a state of internal defense emptiness."

"My Qin State has enough self-confidence to block the attack of the Xiongnu, but once the Xiongnu cross the northern defense line, the consequences will be unimaginable."

"The strength of the three horses can reach the middle level."

Li Si said gloomily: "Zhao Mansion, Zhao State, Zhao Guoxungui, Donghu, Xiongnu, internal and external corresponding, and this is the power in the chaos, and it is also the force that anti-Qin people want to rely on." ”

"The old minister thought about it and calculated the situation of the entire Qin State, but he really couldn't think of it, just the remnants of the Zhao State have settled in my Great Qin for decades, even if there are anti-Qin people who instigate, even if they add the remnants of the Six Kingdoms, they can't do it to mess with my Guanzhong land."

"The situation in Guanzhong is as stable as Mount Tai, that is, there is a rebellion in Longxi, but even if the defenders of Longxi can't deal with it, Guanzhong can also come in one horse, and the Wu tribe has no heart to rebel no matter what."

"Just as when the law was changed, even if the old minister calculated many nobles, many nobles did not dare to blatantly raise troops to rebel, because all the nobles knew one thing, that is, for them, rebellion was undoubtedly a dead end, and it was impossible to rebel unless they were in a desperate situation."

"As for the small rebellion, it is insignificant, as long as it cannot shake the foundation of my Qin State, then the country of my Qin State will exist forever, as long as the foundation of my Qin State still exists, it is only a matter of time before the civil strife is quelled."

"No one dares to say this, but it's true."

"The land of Guanzhong is the foundation of my Great Qin, and without the strength of the defenders of Guanzhong, it cannot shake my Great Qin."

"As previously discussed, the rebellion in Longxi and the rebellion in Guanzhong are just small chaos, chaos for a while and not chaos for a lifetime, and it will not take a month to quell it, unless, there is a force that is enough to resist the surprise attack in my Guanzhong."

"And the westward expansion has stabilized the wealthy nobles of the counties, although these people are still waiting, but in the decision of life and death, as long as there is a way to live, on the contrary, these wealthy nobles do not want to rebel."

"In addition, it is the generals who fought for my Great Qin, these people have long held grudges against the court and Your Majesty because they are dissatisfied with the abolition of the feudal division, and they may be encouraged to rebel, but this is even more impossible, when Your Majesty is still alive, these people will definitely not rebel."

"Moreover, the soldiers and horses of the Xiang clan in Jiangdong are absolutely impossible to appear in the Guanzhong area, whether it is from Wuguan Road, or around the land of Bashu, along the way, Nanjun, Hengshan, Nanyang, Jiujiang, Fault, Huaiyang, all belong to the place where my Great Qin military gathers, and it is also the place where my Qin State has worked hard to manage, it is absolutely impossible to come to Guanzhong quietly, and once the whereabouts are discovered, it will be a turtle in the urn, and it is impossible to escape, and it is absolutely impossible for the Xiang clan to easily take such a big risk with the strength they have accumulated."

"Only, the Donghu people and the Xiongnu will be willing to risk their lives to attack Daqin, and they will not miss any opportunity."

"Because after the Yanmen Pass, the land full of yellow sand is not suitable for survival at all, the Xiongnu and Donghu people have always wanted to go south, and even did not hesitate to move to the west."

"And the remnants of Zhao and the Xiongnu, Donghu are deeply implicated, if you are a little bewitched, you can use the Xiongnu and Donghu people."

"What really made the old minister feel that it was also because of all kinds of chaos in Xianyang, which was done by the remnants of Zhao State, Taiyuan, Yanmen, Yunzhong, Shanggu, Daijun, Hengshan, Handan and other places, which were the homeland of Zhao in the past, and Qin State still had insufficient control over these places."

"Once there is a secret passage, as long as you quietly cross the northern defense line and arrive in Taiyuan, the cavalry will not be able to react if they go south."

Listening to Li Si's detailed explanation, although Yingcheng also had a sense of sudden realization, he still shook his head and said: "With the strength of Guanzhong, the Xiongnu and Donghu people, without 100,000 cavalry going south, it is also impossible to threaten Guanzhong." ”

"But if 100,000 cavalry go south, the first thing is to cross the northern defense line, and it is impossible for the northern defense line not to notice such a big movement."

"This is just one of them, and from Yanmen, Daijun, ancient times, and even any place in Yuyang, even if it crosses the northern defense line and reaches Guanzhong, there are still more than a thousand miles.

"As long as it is found, when the time comes, the Huns who crossed the northern defense line will also be turtles in the urn, closing the door and beating dogs, so that the Huns will lose their foundation and have no chance to rise."

Yingcheng also considered and thought, these are the two biggest problems, and more importantly, at least 100,000 soldiers and horses, how to choose between the grain and grass, if it is looted, it must be perceived, if it is not robbed, it will not be able to self-determination.

"But if, if you destroy my Great Qin, and give up the land of Hetao and Taiyuan to the Huns, this is enough to make the Huns tempted."

"Since the loss of the land of Hetao, the Xiongnu began to move westward, and it can be said that the Xiongnu's hatred for my Qin State is even greater than that of the remnants of the Six Kingdoms."

Li Si shook his head, not only to make a statement to Yingcheng, but also to think about himself and consider the key to it.

And this matter still needs to be carefully verified.

After all.

If the remnants of Zhao really colluded with the Xiongnu, it would be impossible for at least 100,000 cavalry to march quietly.

With a little attention, you can find the exact location.

"It's not unreasonable." Yingcheng pondered for a moment, and also made up his mind.

The remnants of Zhao colluded with the Huns and the Donghu people, this is only one of the possibilities, and it is not exact.

Now we can only respond to changes with the same.

After all.

In case the Huns did not go south, but the imperial court took great pains to mobilize troops and horses to defend, wouldn't this be a big joke.

"Gong Li followed me to the Taiwei Mansion."

Yingcheng also lost his sleepiness.

If you are not afraid of 10,000, you are afraid of what if, and now he is like a frightened bird.

Any disturbance was enough to make him spend a lot of time.

Rapid.

Yingcheng came to the Taiwei Mansion.

Because there was no court meeting, and it was not normal working hours at this time, the two stayed in the Taiwei Mansion for a while.

Wang Shu and the other three elders were hurriedly urged.

"It's impossible, how is it possible, absolutely impossible."

As soon as he heard Li Si's conjecture, Wang Shu shook his head and said, "You know, if even the northern defense line was quietly crossed by the Huns, then my Great Qin would have been ruined a long time ago." ”

"The imperial court's investment in the northern defense line over the years has accounted for almost half of the expenditure of the Taiwei Mansion, and the last general does not believe that the Huns will cross the northern defense line."

"With General Meng Tian's talent, the Huns only have the share of holding their heads and running around, where do they dare to cross half a point."

As soon as this conjecture was raised, Wang Shu and other generals shook their heads in denial.

Not believing this to be true at all.

"Take precautions, although the situation in Xianyang City is inconvenient and strict, but it has reached a time of life and death, and it has to be treated cautiously." Yingcheng couldn't say it explicitly, so he could only say solemnly: "Whether it is to inquire about the soldiers and horses of the Xiang clan in Jiangdong, or to find the traces of the Huns, it is for the sake of the safety of Guanzhong. ”

"It's for the sake of His Majesty's safety."

"I hope that the generals must not be confident, they must be cautious."

"Inform General Meng Tian and pay close attention to the traces of the Xiongnu soldiers and horses."

"At the same time, the Taiwei Mansion immediately sent scouts to Taiyuan, Hengshan, Julu, Shangdang, Hedong, Handan and other places to search for the whereabouts of the Xiongnu.