"When this battle is over, will the Great Wall be rebuilt?"

Xiao Yu asked the emperor.

The Great Wall, since the Warring States Period, countries began to build the Great Wall to defend against foreign enemies, and the Great Wall built by various countries and dynasties combined, the east and west have long been more than 10,000 miles long.

Even in the east of the river to the north, there are two sections of the Great Wall, there is the outer Great Wall in the north of Mayi, and there is the inner Great Wall in the south of Mayi, it can be said that the land of the north is the top priority to defend against the northern nomads.

After the establishment of the Sui Dynasty, the Great Wall was also built many times, and at the beginning of Yang Guang's succession, he built the western section of the Great Wall outside Mayi, from the bank of the Yellow River in Yulin County, to the vicinity of Hukou.

The role of the Great Wall is still very obvious, so it has been built in successive dynasties.

But the Emperor shook his head.

"I deliberately pushed the border to the southern edge of the desert, to the north of Yinshan, so there is no need to repair this Great Wall."

In the past, the Great Wall of all dynasties, in fact, the location is about the same, this Great Wall line, in fact, is the 400 mm rainfall line found in later generations, which is also the boundary between agricultural civilization and nomadic civilization.

This line is also the dividing line between semi-humid and semi-arid zones.

To the north, there is a drought and little rainfall, making it difficult to grow agricultural crops.

Therefore, the Great Wall has been on this line for thousands of years.

For Luo Cheng, if he guards this line, it means that many strategic heights will actually have to be ceded, which will be in a very passive defensive position.

He hoped to push the border to the north, to the Yin Mountain, to the southern edge of the desert.

"The six towns of the Northern Wei Dynasty?"

Zhang Xutuo thought of the defense line of the six towns of the Northern Wei Dynasty, which was originally the Xianbei Tuoba Division, and finally defeated the northern Zhuhu since the fall of the Western Jin Dynasty and unified the north. After he established the country, he established the capital Pingcheng, that is, the Datong of later generations, in the clouds at this time.

Because the capital was close to Yinshan, the northern nomadic grassland overlord Rouran often threatened Pingcheng, so the Northern Wei Dynasty built the Great Wall of 2,000 miles on the Yinshan line, and set up six military towns.

The Northern Great Wall of the Northern Wei Dynasty was built in the north of Yinshan Mountain.

However, the Great Wall lacks terrain support in the north of Yinshan, and the role of the border wall is more prominent.

"The best defense is to attack, I think that to deal with the nomads in the north, blindly building the Great Wall to defend is actually not enough, we must be able to fight. Playing and pulling, grace and power, so that you can be invincible. ”

Although he has not yet defeated Jieli and has not recovered the Daibei and Hetao regions, Luo Cheng has already begun to plan the defense of northern Xinjiang in the future.

He no longer bothered to repair the Great Wall, nor did he want to strengthen the passes.

It's just that those who have been thieves for a thousand days have not been thieves for a thousand days.

The northern border is so long, and if you want to defend it on all fronts, the defense line is too long and there are too many holes.

Rather, it is better to advance further north, build fortresses there, set up military towns, and garrison soldiers and horses. Replace the Great Wall defense line with fortress chains.

Although the fortress chain is not a wall without gaps, the fortress chain is strong in taking the initiative to attack, replacing passive defense with active attack, and pushing the border out of Yinshan can greatly increase the buffer area.

The arable area of Daibei does not need to become a buffer area for border wars, and it can become an agricultural area. After placing all the places in the border towns, the nomadic tribes in the north would have no stronghold to attack the Central Plains.

They crossed the desert and went south, they had to face the northern border towns of the Central Plains Dynasty, unlike in the past, the north and south of Yinshan, the Hetao region, and even the Daibei region became the places where they grazed and raised sheep.

"Don't build the Great Wall!"

This is the first time Luo Cheng has spoken to the military ministers of the imperial court.

"Don't build the Great Wall." After listening to the emperor's words, Zhang Xutuo also felt that his blood was boiling, even if the Sui Dynasty was so strong, he didn't dare to say that he would not build the Great Wall.

Luo Cheng's plan was to wait for the recovery of northern Xinjiang to facilitate the establishment of military towns in the north of Yinshan, and the initial plan was to set up six towns in imitation of the Northern Wei Dynasty to guard several major mountain passes in the north of Yinshan.

In this way, the southern part of the country, Saibei and other places were placed behind the defense line of the military town, and then the people were relocated to reclaim the land, just like the Liaodong outside the Guan, so that it became a frontier full of living borders, rather than the desolate buffer zone of the past.

The climate at this time was much warmer than in later generations.

Therefore, the 400 mm contour rainfall line is actually more northerly.

There is abundant rain, there are many rivers, Hetao, Daibei, that are all rice grain rivers, the same, these places in the eyes of the grassland tribes, is also the most fertile pasture.

The 100,000 troops went to capture the rest of Yanmen in four ways, and the emperor's 100,000 troops surrounded Yanmen, and they were not idle.

Light cavalry was scattered outside the city of Yanmen.

The auxiliary troops are engaged in civil engineering under the city.

Trenches were dug outside the city to build an earthen wall to surround the county town of Yanmen, and on the other hand, red-coated cannons and small and medium-sized catapults were also being transported from the rear.

Under the city, there are many craftsmen and craftsmen who are making every effort to build all kinds of siege equipment, such as ladders, moats, bridges, and chariots.

The emperor was not in a hurry to attack the city, in the face of a big city like Yanmen, the last time he started to attack 200,000 people for more than a month did not take it, he didn't want to storm it, he was not in a hurry, as long as there was sufficient preparation, no matter how strong the city was, it would have to fall.

The officials stationed in Yanmen Lou Fu Second County also began to take the soldiers of the Qin army to organize the re-registration of the registered population and the Qingzhang fields and mansions.

The military government was newly established, the tunzhuang was established, and the land was divided and granted, and there was a busy scene in the rear.

Many of the old wealthy families were moved away by the emperor this time, and even those who were not implicated in the rebellion were ordered by the emperor to buy back the land quota and replace it with other land.

All the officials of the two counties, such as the Taishou, the county commander, the county order, and the county officer, have all been replaced, and even the local officials have also come to a big reshuffle this time.

As for the previous bandits and horse bandits, this time it was even more difficult to escape.

It doesn't matter if you are a Turkic herdsman who is half herding and half robbing, or whether you are a powerful landlord's family and half a people and half bandits, all of them will be wiped out.

With the backing of 200,000 troops, the suppression of bandits was carried out smoothly, the clearing of fields, the registration of household registration was also very smooth, the division of land and the granting of land, and the immigration of tuntian were carried out in an orderly manner.

Although such a large army gathered in Daibei and the consumption of grain and grass was huge, this time the emperor still took out good things such as salt, tea, and wine to attract merchants and transport grain, so it also greatly reduced the burden on the government.

And the money and grain of those who collaborated with the enemy and rebels confiscated by the two counties also raised a lot of grain and grass on the spot.

In the city of Yanmen.

Although Liu Wuzhou had 50,000 soldiers in the city at this time, as the days passed, his heart became more and more panicked.

"What about the army, why haven't the Turkic reinforcements of Jieli Khan come yet?"

If it continues like this, it won't be long before Luo Chengcheng will be well prepared, and when the time comes, it will be a thunderous blow!

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