Shanggu County is the county seat of Fuyang in Huailai County in later generations, Zhangjiakou is its northern dangerous pass, there are three counties outside the mouth, Xin Bi's suggestion is to give these three counties to the jurisdiction of Nanlou.

Coupled with the area outside the Great Wall of Daijun, it is difficult enough to be nomadic in the building, and the only drawback is that it is too close to Danhan Mountain.

However, at this time, Xianbei is no longer in the era of sandalwood acacia, and it has long been divided into dozens of tribes, and it is not invincible.

Nanlou thought about it, reluctantly agreed, and also made a request, if they were attacked by the Xianbei people, I hoped that the Han army could support them, which Yuan Xi happily agreed.

"Brother Nanlou can actually leave the old and weak women and children behind, and Youzhou wants to land on a large scale, and they can also support themselves."

Yuan Xi kindly suggested, Nanlou's eyes lit up when he heard it, and after thanking him busily, he agreed to this suggestion.

This is a win-win result, Yuan Xi needs labor, and the difficult building can reduce the burden and make the troops who go outside the Great Wall more combative.

A few days later, the Ministry of Difficult Buildings began to migrate, and Du Ji took over the land vacated after the Wuhuan people left, planned Tuntian, and established official offices, schools and other institutions.

The biggest benefit to Yuan Xi from the migration of Wuhuan in Youzhou this time was the expansion of the cultivated area.

The area originally occupied by the Wuhuan people has been nomadic for decades, and many fields have become ownerless pastures, and now all of them have been recovered and recultivated.

Although the land has become barren, it is not desertification, after all, the northeast is different from the northwest, the northeast has sufficient rainfall, and there are many rivers, so it is difficult to desertify.

Even the northern part of Jizhou, the western part of Youzhou, and the later Beijing area, were also lush and water-rich areas in this era.

In fact, the same is true of the Guanzhong region, the northern climate of the Han and Tang dynasties was warm and humid, like the south of the later generations, while the south was hot and rainy, more similar to the Nanyang area of the later generations.

This is also an important reason why Chang'an was still the capital of the country until the Tang Dynasty, or because of the Guanzhong region under this climate, the grain can afford to support the population of the capital.

……

At the beginning of Yuan Xi's migration in the Nanlou Department, he asked for credit, and Youzhou was all recovered, which was the first time in a hundred years that the Han Dynasty.

After the news came out, the whole world shook again, and even Liu Xie danced excitedly, and directly gave Yuan Xi the marquis.

"No, you can't let Yuan Xianyi grow stronger, give up Jingzhou for the time being, contact Buyeo, Goguryeo and Xianbei, and join forces to fight Youzhou!"

Xu You, who is drunk like a cat every day, didn't drink a drop of wine today, and hurriedly came to see Cao Cao and put forward this suggestion.

Yuan Xi is strong, and the most uncomfortable is Xu You, who was the biggest traitor to the Yuan family back then, and he didn't want to see the old master strong.

It's not just a matter of security, it's a matter of face, which is a distorted psychology that any traitor has.

But he didn't dare to take Cao Cao's advice, Lao Cao is a hero, I'd rather bear the people of the world, and the people of the world can't bear me, but don't forget that Lao Cao is still a Hanist.

Cao Cao, who has been proud of the Han since he was a child, looks down on the nomads the most, otherwise he would not have a long-cherished wish in his life, which is the ideal of being a general of the Han Dynasty to conquer the west.

He was happy to let him drive the Xianbei people, Buyeo people, and Goguryeo people, but you let him join forces with them, which made him feel ashamed.

Looking at Xu You, who was full of anxiety, Cao Cao sighed and said, "Unite those barbarians to attack the land of the Han Dynasty, this kind of thing can't be done!" ”

"Mengde!"

Xu Yu shouted loudly, regardless of Xu Zhu's anger, and continued to shout: "If you continue to break it, you will suffer from it!" Yuan Xi'er has developed too fast, he didn't have this ability at the beginning, Yu Yin, the fourth and third princes of the Yuan family, will support him in an endless stream because of his excellence, and Hebei will be able to surpass you in a few years! How did Yuan Benchu die, he was angry with you! Will he Yuan Xi take revenge? ”

Cao Cao, who said this, changed color, and other people in the lobby also changed color, but no one dared to accept this strategy, which was to leave a reputation for eternity.

Seeing that Cao Cao was about to be angry, Cheng Yu said: "My lord, appoint the captain of Wuhuan to go north, integrate the Wuhuan people in Bingzhou, recruit Wuhuan cavalry to attack Bingzhou, recruit Ma Teng and Han Sui to send troops to Guanzhong to fight and merge Zhou, and at the same time let Zhang Liao attack Bohai County and contain Youzhou, and Lejin and send troops to attack Guangyang County and contain Jizhou, what do you think?" ”

Cao Cao took a deep breath and muttered: "Everything else is easy to say, but it is useless to protect the captain of Wuhuan to go to the state, I am afraid it is useless, can you not talk about it in the past, the Wuhuan people have always only listened to the orders of the Yuan family, and it is difficult for them to listen to the imperial court." ”

"No, Meng De, let Zhang He go, when he attacked Zhang Yan and others, Zhang He contributed the most, and Wuhuan trembled when he heard his name, let him go to ambush and succeed."

Xu You didn't force the alliance with the foreign tribes now, of course, Wuhuan is also a foreign race, but Wuhuan is different from other foreign races, and has always had a tradition of being recruited by the imperial court.

And Zhang He is indeed the most suitable candidate, Yuan Shao entered the state that year, it was precisely because of the war to suppress Zhang Yan that almost all of them were launched in the state.

The black mountain thief Zhang Yan hid in the Taihang Mountains, which is the dividing line between Jizhou and Bingzhou, but the road in Jizhou is difficult to travel, and it is more convenient to attack from Bingzhou.

But the power of Bingzhou is too complicated, since Ding Yuan left, the entire Bingzhou has fallen into chaos, Xianbei people, Wuhuan people, Southern Huns, plus the Black Mountain thieves from the Yellow Turban Army.

It wasn't until Zhang Yang went to Shangdang County that he laid a place for the Han people to recuperate.

Zhang Yang is a native of Bingzhou, a fellow villager with Lu Bu, and has a good relationship, Yuan Shao and Lu Bu jointly attacked Zhang Yan, which was completed under his matchmaking.

In order to crack down on Zhang Yan, Yuan Shao naturally had to send a general of sufficient weight, but he could cooperate with Lu Bu, Yan Liangwen was obviously inappropriate.

These two people are arrogant, if they cooperate with Lu Bu with the same character, it is easy to disagree or even infighting, Lu Yi is also a violent temper, and only Zhang He is the most suitable.

In the Taishang Mountains, including Zhang Yan, there are more than a dozen remnants of the Yellow Turban Army, collectively known as the Black Mountain Army, nominally Zhang Yan is their leader, but in fact most of the time they do their own thing.

Zhang He took advantage of their weakness, broke through each of them, exterminated and lured more than a dozen shares, and only Zhang Yan was left alone, so he had to leave Taihang Mountain and go to Henan.

This is also the reason why Zhang Yan got involved with Cao Cao, otherwise he would not be able to reach Cao Cao in Taihang Mountain.

It wasn't until Cao Cao occupied Hedong that Zhang Yan returned to Taihang Mountain again, but at this time he had changed and had already followed Cao Cao, but he had no master-slave relationship.

As early as in the Great War between the Two Yuans, Zhang Yan chose to support Yuan Shu, and was appointed as an official by Yuan Shu to the imperial court, which can be regarded as a serious court general.

Cao Cao didn't treat him as a thief, so it was one thing to take refuge, and he didn't dare to force him to admit his master too much, after all, Cao Cao at that time was not very strong.

Lao Yuan is the first in the world, a genuine Han general.