After receiving the war report that the Karasuma cavalry plundered the people in the border areas, Liu Hou successively received war reports from other places that the Xianbei tribe had plundered the Han land: the Xianbei Budu root plundered Taiyuan; Xianbei Kebineng plundered Daijun; The Xianbei Suli tribe plundered western Liaoning.

After the nomadic tribes east of the Xiongnu were defeated by the Xiongnu's Mao Dunshan Yu, they retreated to Wuhuan Mountain and Xianbei Mountain, and became Wuhuan and Xianbei tribes, collectively known as the Donghu people.

In 91 AD, the Eastern Han Dynasty and the Southern Xiongnu dealt a fatal blow to the Northern Xiongnu, and the Northern Xiongnu were forced to move west. Xianbei took advantage of the situation to occupy the homeland of the Xiongnu in Mobei, and more than 100,000 tribes of the Xiongnu who remained in Mobei were merged into Xianbei. Xianbei has been strong since then.

In the middle of the 2nd century AD, a brave and wise leader emerged among the Xianbei people, Tanshi Huai. Xianbei continued to grow under the leadership of Tanshi Huai, unified the Xianbei tribes, and built a tooth tent in Gaoliu (now Yanggao County, Shanxi) more than 300 miles north of Danhan Mountain (near Shangdu County, Inner Mongolia) Qiushui (now Dongyang River).

Subsequently, Tan Shihuai led his troops to reject Ding Ling in the north, defeated Fuyu in the east, attacked Wusun in the west, disturbed the Hanbian in the south, and established a strong military alliance. It's a pity that the good times didn't last long, after the death of Tanshi Huai, his son and Lian were more Adou than the original, and they couldn't even keep their father's inheritance.

The huge Xianbei alliance eventually collapsed, and the central and eastern Xianbei to the east of Daijun was also divided into three power groups, led by three "adults".

One of its adults is the root of Budu, and its subordinates are distributed in Taiyuan, Yanmen and other places in Bingzhou; the second is Kebineng, whose subordinates are distributed in Daijun, Shanggu and other places in Youzhou; The third is Xianbei Suli, Mijia and Que Ji in the east, and the people are distributed in Liaoxi, Youbeiping, and Yuyang outside Youzhou.

Now it is the tribe of these three adults who are harassing and plundering the Han land, plus Karasuma, which means that Liu Hou has to face four powerful military groups at the same time.

After these guys were defeated by Cao Cao before, they were all attached to the Wei State on the surface and accepted the canonization of the Wei State, but in fact, they were secretly accumulating strength and plotting against them. As soon as they have the opportunity, they will come out like poisonous snakes and bite the big man a few times. Of course, there is also a constant struggle between them.

Liu Hou, who knew the direction of the next nearly 2,000 years of history, knew very well about the urine nature of these nomads, and knew that they were white-eyed wolves who could not be raised.

But when they recover their vitality and their military strength becomes strong again, once the Central Plains Dynasty is weakened and chaotic, they will show their fangs, pounce on them, bite the former master all over the body, and even occupy the magpie's nest to snatch this flower world and sit in the Dragon Court by themselves. Even if he used to be called the Heavenly Khan, even if he was once a tribute, he was just a lamb in their minds at this time.

Liu Hou has been guarding against these people for a long time in his heart, and he has never relaxed his vigilance. But when this moment really comes, I can't help but be a little nervous. He knew the terrible nature of these enemies, these barbarians had nothing but a few sheep, and they were basically rotten lives.

If the weather is bad and there are too many cattle and sheep that freeze to death in winter, their only way to survive is to go out and loot frantically. Either starve to death, or loot. If they loot, if they are not killed, the looted goods can help them survive the winter.

Such multiple-choice questions are naturally not difficult to do, so every winter, it is the time for these nomads to turn into wolves to hunt for food. Before, Wei Guotun was stationed at the border, and they were scared by Cao Cao, so they naturally didn't dare to move, plus Wei opened a mutual market with them, they could exchange some grain with Wei to barely survive, so the motivation to loot was even smaller.

Now that war has broken out in the Central Plains, and the Wei army has withdrawn, they have a reason not to take the opportunity to come out to "make a fortune", so it is logical that this time Karasuma and Xianbei will come out to "fish the world".

Liu Hou stood in front of the wall of the large military map that hung up, looking at the terrain of the northern land, and was silent for a long time. The sand table generally only shows the terrain of the local battlefield, and it is impossible to make a sand table for a national terrain like this, because it will be very large, the amount of work is too large, and it is not convenient to carry.

Even if it is to be done, it will only be done in peacetime, recruiting a large number of craftsmen, and doing it in a safe, fixed location, such a behemoth is very inconvenient if it moves with the army, and it is not as good as a map.

Standing behind him were Sima Yi, Guo Youzhi, Deng Zhi, Bu Qi and several other strategists. They all already knew about these urgent war reports from the north, and the little emperor summoned them today, obviously to discuss countermeasures.

Liu Hou looked at the map for a long time, and finally saw that something was wrong, and asked, "Why are most of the places where these Xianbei tribes and Karasuma live in the Great Wall?" Doesn't it say that the Great Wall is a national border? Didn't the border armies of the past dynasties rely on the Great Wall to guard the border and prevent foreign invasions? ”

Liu Hou asked, pointing to a long, slender wooden stick that looked like a Great Wall across thousands of miles in the north of the map. Just now he listened to Guo Youzhi's introduction to the activities of the Xianbei Three Divisions and the Karasuma Clan, and when he looked at the map, he found that many of the locations just mentioned were on both sides of the winding dragon above the map.

That is to say, these nomads are both inside and outside the Great Wall, and many of them live inside the Great Wall, and the southernmost one has even reached Taiyuan in Shanxi. In this way, the Great Wall, which was built by successive dynasties with countless manpower and material resources, has completely lost its protective effect.

"Your Majesty, since Tan Shihuai served as the leader of the Xianbei tribe, he established a royal court in Gaoliu Beidanhan Mountain, plundered the counties along the border to the south, resisted Ding Ling in the north, repelled Fuyu in the east, attacked Wusun in the west, and completely occupied the homeland of the Xiongnu, with a land of more than 14,000 li from east to west and more than 7,000 li from north to south.

The Han army was defeated and returned after many expeditions, and Xianbei took the opportunity to encroach on our Han land in the south. After the Yellow Turban Rebellion, the Central Plains was in turmoil, the border army collapsed, the Great Wall defense line existed in name only, Xianbei was like no one in the north, and even occupied a large ~ piece of land in the Great Wall. Guo Youzhi came out to explain.

Liu Hou was silent, and he added a sentence in his heart: If it weren't for Cao Cao's troops to defeat Xianbei back then, the situation might have been even worse, from this point of view, Cao Cao still has a lot of contributions to the Han people.

"Now, then, let's order all the troops to attack Xianbei with all their might." Liu Houdao.

"Your Majesty, slow down, this matter will be discussed in the long run." Guo Youzhi.

"Oh? Is there any objection to this? Liu Hou asked puzzled.

"Your Majesty, the land of Xianbei Karasuma has a cold climate and a long way, if you want to conquer, it will be a battle for the country, and you must be fully prepared before you can send troops. Besides, Xianbei and Karasuma are both cavalry, coming and going like the wind, and our army has many infantry, so it is difficult to catch up with them.

Our army can defeat them, but it is impossible to destroy them completely. They can hide in the depths of the grassland, and after recuperation, they will continue to go south to the border for trouble, so the minister wants to ask His Majesty, how far will the battle be fought in this expedition to the north? Guo Youzhi asked.