Wu Lian pointed to the location of the Xianbei royal court in the picture and said: Xianbei is also nomadic. The so-called royal court, not to mention Luoyang, is not comparable to Lousang. It's just a big tent enclosed by some wooden fences. You can leave camp at any time. In addition, Xianbei will also build a high car, stepping on snow and wading on the water. Hundreds of miles a day. As long as the Han army is out of the fortress, the royal court can move in two days at most. At that time, it is only necessary to ambush heavy troops around Danhan Mountain, and the Han army will be defeated.

Huang Zhong nodded lightly: Hu people are nomadic. The so-called royal court is all leather tents and caravans, and there is no tile. Just go. Danhan Mountain is 300 miles north of Gaoliu. As soon as the army is out of the fortress, it will be discovered by the Xianbei scouts. The nearest Xianbei three will raise troops to fight. Guerrilla tactics. Fight and go, blocking the pace of the Han army. In this way, the 300 miles that can be covered in three days may take five, seven, or even ten days to arrive. At that time, Danhan Mountain had already ambushed the Xianbei heavy soldiers. Taking advantage of the fact that the Han army that had fought all the way here was not stable, they fought on all sides. Our army is in danger.

Liu Bei sighed: My Han is worried about internal and external troubles, there are Qiang people in the west, barbarians in the south, Xianbei in the north, and thieves inside. Because of this, it is impossible to fight a protracted war. It can only be solved quickly. The same is true for Xianbei. It coincided with a locust plague and a shortage of pasture. The cattle and sheep starved to death, so at the turn of spring and summer, they went south to plunder. Both sides want to fight quickly. Therefore, it will not take long to divide the winner and loser.

This turned his attention to Danhan Mountain: Wulian, what is the mountain situation here? Can it be suitable for ambush?

Wu Lian replied: The northern slope of Danhan Mountain is gentle, and the southern slope is steep. The mountains are dense, some high and some low. The valley is criss-crossed, and most of them are the traffic channels of the front and back mountains. Xianbei people who are familiar with the terrain can go around freely. Or south or than, back and forth. When our army first arrives in a strange place, it will inevitably take care of one at the expense of the other.

Liu Bei asked again: If you hear that my army is coming, the Xianbei royal court will pull out the camp and leave. Where will it go?

Wulian replied casually: Go east.

Seeing her blurt out, without thinking about it, Liu Bei asked: Why?

Wu Lian pointed to a mountain range around Dan Khan Mountain and said: Dan Khan Mountain is a group of mountains in the middle of Yin Mountain, Yin Mountain stretches for 2,000 miles from east to west, and is 100 miles wide from north to south. To the north, you have to climb over the Yin Mountain, although there is a valley to pass, but the terrain is undulating, and it is not easy to drive. Staying away from aquatic weeds, stalks, and salt land, and the cattle and sheep herd is not enough, making it difficult to sustain the second. Third, if the royal court goes north, the control over the three Xianbei will also be weakened, and there will be chaos for a long time. And Hanting did his best this time, which is a strategy to smash the nest. Over Yin Mountain, it's too late. Therefore, it is the most convenient to move from east to west along the plateau on the southern slope of Yinshan Mountain.

Liu Bei asked again: Since everything is acceptable, why do you want to go east?

Huang Zhong replied: Yanmen, Yunzhong, and the border counties of the prefecture are all west of Danhan Mountain. If Wang Ting traveled west, he just happened to collide head-on with two Han cavalry troops. Since you want to avoid trouble, the farther away from the front of the army, the better. So to the east.

Liu Bei looked at the map carefully, and then he suddenly realized: Sure enough!

Along the southern foot of Yin Mountain, all the way to the east. Liu Bei looked from Dai County, Shanggu, and all the way to Yuyang County. Suddenly, it stopped at a place near the right Beiping.

This asks, "Where is this?"

Huang Zhong leaned in and took a look: Baitan County. Placed by the former Han Dynasty, the present Han Dynasty has been abolished.

From Danhan Mountain to the old city of Baitan County, it is about more than 1,000 miles. If you send an army to seize Baitan City, you will be able to calm down and repair the city walls. Wait for the royal court to move east, and intercept and kill halfway. Can big things come true?

Liu Bei thought about it carefully, it didn't seem to be wrong!

This asked: How can I get to Baitan City quickly?

Huang Zhong's eyes flashed, obviously knowing the young monarch's intentions. This turned his attention to Wulian: Shanggu Wuhuan has lived in the border county for a long time, and he must know it.

Wu Lian was stunned for a moment, and then nodded heavily: Wait until I asked Brother Wang.

Liu Bei didn't know. The Northern Expedition in history, after this is as follows: in August of the sixth year of Xiping, Emperor Ling entered the border counties with Xianbei for many years, ordered to protect Xia Yu, the captain of Wuhuan, and broke the Xianbei Zhonglang general Tian Yan and the Xiongnu Zhonglang general Zang Min each led more than 10,000 cavalry people, respectively from Gaoliu (Dai County), Yunzhong County, and Yanmen County, and attacked Xianbei in three ways. The Han army went out of the fortress for more than 2,000 miles, and the Xianbei leader Tan Shihuai ordered the eastern, central, and western three adults to lead the crowd to meet the battle, and defeated the Han army. Xia Yu and other soldiers lost all their baggage, seven or eight out of ten soldiers died, and the three of them only fled back with dozens of horses. If you are guilty, you should be beheaded, and you should pay a ransom to avoid death. They were all demoted to commoners for the crime of defeating the army. Since then, the Xianbei army has become more vigorous, and has violated the Han border year after year.

This history is unknown. What happened after the stopper was released, no one knows. However, from the short words in the history books, you can get a glimpse of one or two.

The Han court sent three good generals, and the soldiers were divided into three routes. And all of them are cavalry. Obviously, it's a nest trick.

The Han army went out of the fortress for more than 2,000 miles. Danhan Mountain is only 300 miles away from Gaoliu County. If you go straight to the enemy's nest, how can you fight for more than 2,000 miles. It shows that the Xianbei Royal Court, as Wu Lian said, migrated elsewhere before the arrival of the army. The Han army pursued all the way, so it fought for more than 2,000 miles. The specific route is unknown, but it can be known from the 'more than 2,000 miles', which has many twists and turns.

Chase all the way. The Han army fought continuously, the army was tired, and the people were sleepy and tired. In the process of pursuit, the troops were gradually eaten away by the Xianbei wolf horse. In the end, Xianbei surrounded on all sides and was destroyed in a battle.

In this battle, all the Northern Goblin Cavalry was lost. The Southern Xiongnu king Tu Teruo's corpse was seriously injured and died violently the following year. A few years ago, Yiling's corpse died in Lao Shan Yu, and Tu Teruo's corpse had just succeeded to the throne, and now he died in a war. Led to the turmoil of the Xiongnu and stimulated infighting.

is no longer able to resist Xianbei's southward movement.

Fortunately, four years later, the sandalwood locust in the prime of life died violently for no reason. Xianbei was also divided into three divisions, each acting separately and attacking each other. It is also unable to annex and encroach on Han soil.

Huang Zhong said that as soon as August, at the latest in September, the imperial court will send troops.

Liu Bei nodded in goodness.

There are still three or four months for Liu Bei to turn around, and he needs to prepare in advance.

This secretly arranged for the good craftsmen of the Hou Mansion to build the tools for defending the city, and prepared dry food and forage for the march.

It's a matter of confidentiality. It is not advisable to write letters. Wulian sent his relatives to the north. Soon, Wuyan, the king of Wuhuan in Youbeiping, sent back the news of Hu Yu. Said, out of Lulongsai 400 miles, you can reach the city of Baitantun.

Lulongsai, located in the easternmost part of the foothills of Xuwu Mountain, is located between two mountains. Meishan on the left, Yunshan on the right.

In the Western Han Dynasty, the Han and the Xiongnu fought for many years in the area of Youbeiping, and Lu Longsai was quite smooth. However, from the Eastern Han Dynasty to the present, more than 100 years, this pass road is inaccessible, and only "micro paths can be followed". It's not easy to get around. It's hundreds of miles away.

Besides, what is Tunshu City?

Originally.

In order to defend against aliens and develop the frontier, the two Han Dynasty built a large number of fortresses along the line of the Great Wall. Such as Feng, Sui, Guan, Hou Cheng and Tunshu City, as an alarm and garrison, and form a solid defense system. Tunshu City is not only a place where heavy troops are stationed, but also a place where the frontier is tuntian.

"White Sandalwood", that is, "White Sandalwood Mountain", is located on the south bank of Gaoshishui (Waterfall River).

"Notes on the Book of Water": "The river is southeast again, and the water flows back to the meander, which is called the Qu River." Three hundred miles northeast of the town, it goes out of the gorge in the east and enters the Anzhou boundary, and flows southeast to the ancient city of Baitan County, Yuyang. "Hanshu • Geographical Chronicles" said: "The water is out of the county in the north of the barbarians." Emperor Jing of the Han Dynasty edict Li Guang said: The general and his commander are in the east, and those who are white sandalwood are also."

The combination of the two can determine that the site of Baitan is more than 400 miles northwest of Lulongsai.