Today's Han Dynasty is actually the best time to solve the border troubles of Beiyi.

After this stage, then the northern border troubles will always be the nightmare of the Central Plains Dynasty, after the Huns, there are Xianbei people, and later there are Turkic people, these Beiyi can once make the great empire as strong as Han and Tang tremble.

After that, there were the Mongols, who finally overthrew the Central Plains Dynasty, and even put the later Ming Dynasty "Nine Sides and Thirteen Towns" under great pressure and finally collapsed.

In the later Qing Dynasty, there was no threat of Beiyi entering the Central Plains.

Yang Yi once carefully thought about the reason for this, although the Qing Dynasty was originally from the north to dominate the Central Plains, but in the northern grasslands, the Mongols were still powerful, but there was no threat of the Mongols going south.

the overlords of the steppe in the past dynasties, the Xiongnu, Xianbei, Turkic, Khitan, Jurchen, and Mongolian; The most powerful were undoubtedly the Mongols.

The names of the Mongolian ethnic groups and living areas vary from one period to another.

In the "Historical Records", it is called "Donghu" ("in the east of the Xiongnu, so it is called Donghu"), and later in the "Northern History", it is called "Murwei" ("the south is Khitan, and in the north is called Murwei"), and it is called "Tatar" in the "Historical Collection".

In any case, after Temujin's Khuriltai assembly on the banks of the Uriltai River was called the Great Khan, "Mongol" had gained the recognition of all members of the group and became their common name.

It was also a turning point in the history of the Mongols, from which the Mongols began to transform from a scattered steppe nomadic tribe to a centralized state system, and as a result, the only golden family entitled to inherit the throne of the Great Khan emerged.

Prior to this, no family had the right to call itself or be recognized as the "Golden Family".

The Mongol tribes gathered together by Genghis Khan formed a torrent that swept the world in a very short time, and all the land where horses could gallop trembled under the iron hooves of the Mongols.

However, the good times did not last long, and with the bloody struggle and struggle for the establishment of the early Mongol lineage, the Great Mongol Empire began to faintly split into two spheres of influence in the eastern Mongolia and the western Mongolia during the period of Möngke Khan.

After Möngke's death, the vast Mongol Empire was officially divided into five khanates, known as the Kipchak Khanate, the Chagatai Khanate, the Ögedai Khanate, the Ilkhanate, and the Yuan Empire (Great Khanate).

The Chagatai Khanate, the Ögedai Khanate (Haidu) and the Yuan Empire in the west had a long period of war, and it is clear that there are huge differences in politics, economy, and people's livelihood between the eastern and western parts of Mongolia.

Later, after the rise of the Central Plains and the expulsion of the Mongols from the Central Plains by the Ming Dynasty, the power of the Mongols did not disappear, but they were called "Northern Yuan" after returning to the steppe area.

Just like today's Xiongnu, when Emperor Shizongwu was emperor, he achieved a comprehensive victory against the Xiongnu, but he still did not destroy the Xiongnu, even later, the emperor of the Han family, the Northern Expedition to the Xiongnu, did not really destroy the overlord of the grassland.

Up to now, not to mention the remnants of the Northern Xiongnu who fled to the west of the Western Regions, there is still a Southern Xiongnu, and the total number of households is also a large ethnic group of millions of people.

It can be done to slaughter millions of people and exterminate their people, but now the grassland is not only the Southern Xiongnu, the Southern Xiongnu can no longer become a disaster, but the Xianbei people, Wuhuan people, Qiang people and so on.

These tribes on the steppe, like leeks, cut a stubble and give birth to another stubble, one overlord is destroyed, and the other overlord rises again.

After being driven away from the Central Plains by the Ming Dynasty, the Mongol Dynasty's control over the Mongol forces in various regions was weaker, and the entire Mongolian nationality became three major parts:

Warat (western Mongolia, in the Khobdor River, Irtysh River basin and Junggar basin); This is equivalent to the Qiang people now.

Tatar (Eastern Mongolia, living in the area of the Onon and Khulun rivers and south of Lake Baikal); This is equivalent to the current Xianbei people.

Wuliangha (Duoyan Sanwei, living in the area of Xiliao River and Laoha River); This is equivalent to the current Southern Xiongnu.

Among them, Wuliangha is the Mongolian tribe of the Ming Dynasty, and the same as today's Southern Xiongnu, Zhu Yuanzhang, the Taizu of the Ming Dynasty, in line with the principle of "talented, integrated promotion", in the 22nd year of Hongwu, set up Taining, Duoyan, Fuyu three guards to command the envoys, the three guards are subordinate to the Ning King Daning Division, all under the jurisdiction of Ning Wang Zhu Quan.

And Emperor Cao Cao of Wei Wu detained the last generation of the Southern Xiongnu Shan Yu Hu Chuquan Shan Yu, sent the Right Xian King to the Beijian State, and divided the Southern Xiongnu into five parts, namely left, right, south, north, and middle, and placed them in the northern area.

During the battle of Zhu Dijing, with the help of this brave Mongolian cavalry, he built Emperor Wen for his southern expedition, and Yongle became the emperor.

If there is no rise of the Han Dynasty, then a few decades later, the kings of the Jin Dynasty will rebel, and they will also use the power of the Southern Xiongnu to bring the Xiongnu back to their glory......

With the exception of the southern annexed Uliangha, relations between the Mongols and the Tatars were not very harmonious.

And now the Southern Xiongnu and Xianbei, Qiang, and Wuhuan are not very good.

As the western Mongol power (Warat) gradually grew, in addition to beating Ming Yingzong in Tumu Fort, he also began to have ideas about the position of the Great Khan controlled by the Golden Family.

If you want to say that it is ruthless enough, "Ming Shilu" contains: "The military department played, to descend the Tatar words, the chieftain also fought with his lord Totobuhua (the Great Khan of the Golden Family) first, Totokh Buhua was also defeated first,......, and also made himself the king, and all the leaders of the Yuan Dynasty, the Miao descendants, were killed." ......, also slaughtered the white horse nine, and the black cow sacrificed to the sky,......。 ”

"Huangming Beiyu Kao" also recorded: "He also defeated Puhua first,......, and then established himself as a khan, and killed the deceased leader Miao descendants." Kill the white horse nine, and the black cow five sacrifices to the sky. ”

Fortunately, the history of the Ming Dynasty is not accurate, and there are still a few missing between his fingers, which is the "Lord of Zhongxing" Dayan Khan (孛弍jin Batu Mengke) who rose again after 30 years.

During the reign of Dayan Khan, in order to consolidate the rule of the Mongol regime, the princes were sealed all over the place, and 60,000 households were built on the left and right wings.

The 30,000 households on the left wing are 10,000 households in the Chahar Department, 10,000 households in the Uliangha Department and 10,000 households in the Khalkha Department; The 30,000 households on the right wing are 10,000 households in the Ordos Division, 10,000 households in the Tumut Division, and 10,000 households in the Yongshebu Division (Harashen and Asute).

Dayan Khan directly commanded 30,000 households on the left wing, and the Great Khan was stationed in 10,000 households in the Chahar Department; The three thousand households on the right wing were exercised by Jinong on behalf of the Great Khan, and Jinong was stationed in the 10,000 households of the Ordos Department.

Dayan Khan's division of 60,000 households was the origin of the formation of the Mongolian tribes in later generations, and his sons became the ancestors of the Chahar tribe, the Tumut tribe, the Zarut-Bahrain tribe, the Kashiketeng tribe, and the Transkhalkha tribe.

Theoretically, the Mongol chiefs were members of the Golden Family, but because the Khan's tent was located in Chahar, its chieftains were passed on from generation to generation by Dayan Khan's eldest son. Therefore, the Chahar Mongol tribe is faintly under the public golden royal lineage. 020 reading

"The Origin of Mongolia" commented on Dayan Khan's division of the six Mongolian tribes, "This Dayan Khan recovered 60,000 people and went to Mongolia in peace."

But to be honest, Dayan Khan ruled only the eastern Mongols, and the western Mongol region was still a relatively independent sphere of influence. The only difference is that the western Mongol tribes have changed their names in the historical sources, from Warat to Oirat.

During the Qing Dynasty, the western Oirat consisted of four divisions, namely the Ulros (also known as Dzungar), Dulbert, Turgot, and Shuote; The four alliances are headed by Hiroros, but they are not subordinate to each other.

Among them, Dzungaria means "left wing" in Mongolian, which was originally a general term for the four Oirats, and later appeared as a representative of the four Oirat divisions because of the strong strength of the Oirats department. Therefore, Dzungaria became the name of the Zolus Department again.

The area where the Dzungar tribe lived first was in the area of Tacheng in present-day Xinjiang, and later moved to Ili;

The Turghut tribe was adjacent to the Dzungar tribe near Tacheng, and later moved west to the lower reaches of the Volga River north of the Caspian Sea due to the oppression of the Dzungar tribe; The Dulbert Department was centered in Altay in northern Xinjiang; The Heshuo Department was originally in the Urumqi area, and moved to the Hehuang area at the end of the Ming Dynasty.

The descendants of Dayan Khan in eastern Mongolia gradually separated into two major parts of the desert south and the north of the desert during the long historical period, and continued to divide into more fragments.

When the last Great Khan of Mongolia, Lin Dan Khan (the 7th grandson of Dayan Khan), succeeded to the throne, Mobei Mongolia (Trans-Khalkha) did not recognize his status as Great Khan at all, and the Korqin, Inner Khalkha, Tumut, and Ordos tribes in Mongol Southern Mongolia went their separate ways.

As the Great Khan, Lin Dan Khan could only control the Chahar tribe in the Liao River valley (divided into eight Etoks, namely Haozit, Naiman, Keshiketeng, Uzhumuqin, Sunit, Aohan, Alakzhuot and Zhuxiti), because of the residual power of the Chahar kingship, he was reluctantly respected as a co-lord by most tribes.

This is basically the same as the current situation, although the Huns used to be the co-masters of the grassland, but now Liu Bao wants to become the Xiongnu Shan Yu, the overlord of the grassland, and other tribes will not give him face.

Yaozun obviously couldn't satisfy Lin Dan Khan's ambitions, and he, who was interested in the world, was eager to restore the glory of his ancestors, and began to forcefully suppress and rein in the forces of various tribes.

"There is only one Ming emperor in the Southern Dynasty, and I am the only one in the north, how can I become a king everywhere? I should be inside first, then outside."

Even if Lin Dan Khan was unlucky, just as his ambitions were rising, an unstoppable force rose between the white mountains and black waters, the Jurchen Houjin regime.

Nurhachi's gaze was never limited to the northeast corner, and in the course of his long-term interactions with the Mongols, he had a deep insight into the current situation and tendencies of the Mongolian dispersion.

"The people of Mongolia are like clouds, and when the clouds merge, it causes rain, and when the Mongolian tribes merge, they become soldiers, and they scatter like clouds and rain stops; When it is gone, I should take it. ”

In addition, the capture of the Mongols was also one of the inevitable measures to attack the Ming in the south, at least, nominally, the Mongol tribes were still allies of the Ming Dynasty, although they were allies bought for money ("city rewards").

For Houjin, who didn't have many troops, if he went south with all his might, it would be really difficult for the Mongols to dig out their hearts with a black tiger behind the flank.

This point was clearly understood by the Jurchen leaders of all periods, just as Huang Taiji said: "Taking Yanjing is like cutting down a big tree, you must first cut it from both sides, and the big tree will be its servant."

Therefore, the shovels used by the Jurchens to dig the corners of the Mongols never stopped, and before Nurhachi became Khan, Korqin, Nekharkha and other departments reached a marriage relationship with the Houjin.

However, Lin Dan Khan has never handled the relationship between the Chahar Department and the Mongol tribes in Southern China. However, during this period of time, the Mongolian ministries were encouraged by the "city reward" of the Ming Dynasty, and they still crossed the Houjin comparison a few times, but the result was a great defeat for Mongolia.

Under the strong pressure of the Later Jin, the left wing of Monan Mongol threw himself into the Later Jin Dynasty, and the desperate Lin Dan Khan was forced to lead tens of thousands of troops to leave the hometown of Liaohe and conquer the right wing of Mongol in the west.

On the way of Lin Dan Khan's westward expedition, all the tribes of the Mongol right wing were attacked; Lin Dan Khan attacked the Tumut tribe, not only occupying his old nest of Naturalized City, but also conquering the Ordos tribe.

However, Lin Dan Khan, who occupied the territories of the Tumut and Ordos tribes, did not have a good time, and the history of the Ming Dynasty recorded that "its livestock was scarce, coupled with the early frost outside the plug, and the grain was not harvested and the epidemic was prevalent".

Although the strength of the Chahar Department was damaged, this strength was enough to beat the Ming Dynasty.

Emperor Chongzhen of the Ming Dynasty ascended the throne; After the emperor came to power, he heard that the dynasty needed to spend money to sell the peace, and he was furious at that time, not only "rewarding him", but also killing the envoys sent by Lin Dan Khan to ask for money.

Chahar broke through the border, killed tens of thousands of soldiers and civilians of the Ming Dynasty, and almost captured Datong City; At this time, Chongzhen realized that he really couldn't play with the Mongols, so he pinched his nose and resumed the "city reward" in desperation.

At this time, the emperor Taiji in the east felt that Lin Dan Khan would be a scourge sooner or later, and he summoned the Mongol tribes to meet on the banks of the Xilamulun River; The leaders of the Mongol Horqin, Zalut, Balin, Naiman, Aohan, Karaqin (Harashen), Tumut, Alu Korqin, Ongniut, Asuut and other tribes gathered under his command and gathered 100,000 troops to fight west against Lin Dan Khan.

After Lin Dan Khan got the news, he had no choice but to flee south; Huang Taiji divided his troops into three routes and pursued them for 41 days, and in late May, he entered Guihua City, and only stopped after learning that Lin Dan Khan had crossed the Yellow River.

In the process of fleeing westward, a large number of Chahar troops fled, and the remnants of Huang Taiji collected tens of thousands of people.

Lin Dan Khan led his troops into the Hexi Corridor, preparing to cross the Qilian Mountains into Qinghai, join up with the Chotu Khan entrenched in Qinghai, and expand to the southwest. However, when he reached the Great Grass Beach in Qinghai, Lin Dan Khan died of smallpox.

His death led to a reversal of the strategic direction of the Mongol Chahar tribe.

Lin Dan Khan's son was reluctant to open up in the relatively difficult Qinghai region, and instead led his troops back to the Hetao area.

When Huang Taiji learned that the Chahar tribe had returned to the Hetao, he immediately sent Dolgon to launch another expedition to the west.

Under the strong military pressure of the Later Jin, Lin Dan Khan's son Ezhe surrendered to the jade seal of the country; At this point, the Mongol Empire, founded by Genghis Khan, a generation of Tianjiao, officially ended, which lasted 421 years.

And Lin Dan Khan is also recognized as the last Great Khan of the Mongol Empire.

The Huns accompanied the Qin and Han dynasties to the present, and the survival time was better than that of the later Mongolia, and they were really the first generation of overlords of the grassland.

This is also the reason why Yang Yi has to solve the scourge of the Huns in Chang'an first, otherwise, when conquering the Central Plains, let the Huns sit big, and then want to suppress them, it will take ten times the effort.

Taking history as a mirror, if you observe it clearly, you can naturally understand it from it, so Yang Yicai gave up the great opportunity to enter the Central Plains and solve Beiyi first, and the measures to solve Beiyi are also to learn from history.