Zhang Juzheng has long known that Gao Gong has put a lot of effort into the situation in northern Xinjiang, and in general principle, he and Gao Gong's ideas are quite consistent, and they both want to change the bad situation that Da Ming has been passively beaten for many years. He also has some understanding of the idea of high arches, and he agrees with them very much.

The idea of high arch was mentioned by a logistics master in later generations, but it was sprayed very badly - the outside must be safe first.

In reality, however, there is nothing wrong with this idea itself. As for the bitter fruit that the logistics master ate back then, the reason is that the external troubles have reached the point of extinction of the country, and he has no ability to be in the country, but he insists on the first in the country, but the result is, of course, it can only make the royal outside not successful, and the inside has no play, and he has caused a lot of trouble in vain.

But the situation faced by Gao Gong at the moment is obviously different from that of the logistics master.

Internally, due to the almost unreserved trust of Emperor Longqing, Gao Gong has the ability and authority to suppress the internal noise and forcibly promote the reform of all aspects, so as to strengthen the strength of the Ming Dynasty and form a situation of "striking iron and having to be hard", which has been said a lot and will not be repeated here.

But from the outside, it's worth mentioning. The most important of these is that the Mongols themselves have long been de facto divided. At this time, Mongolia, not to mention that it did not have the strength to destroy the Ming Dynasty, and even such a mind had long since ceased to exist. The reason for their frequent invasions, in the final analysis, is very simple, that is, they can't survive without looting some supplies.

How did this happen? Especially after the left-wing Mongols moved south, this split became more and more pronounced. So that at present, even the sluggish empire of the Ming Dynasty has felt that the division of Mongolia is a foregone conclusion, and people of insight represented by Gao Gong and Zhang Juzheng have realized that the Mongols can't even figure it out within themselves, how can they have the heart and strength to swallow the brilliant Ming Dynasty with "hundreds of millions of people and millions of heavenly soldiers"?

Therefore, Gao Gong invited Zhang Juzheng to re-analyze and plan the strategy against Mongolia.

As a matter of fact, the process of division in Mongolia and the current real situation are of great significance to the decision of Gao Gong, Zhang Juzheng, and other elders in power at the moment, as well as to the strategy of "economic penetration and political handling" of Mongolia in the future, and it is worth mentioning.

If this matter is recounted too far, it will be troublesome, but at least it must be started from the time of Dayan Khan.

At that time, with the disintegration and decline of the Warat tribe, the Tatar Tumut tribe gradually rose under the leadership of Dayan Khan, and in the process of Dayan Khan's rise and domination of the steppe, there was a tribe called the Chahar tribe, which also made great contributions to the Khan of the Golden Family. As a result, the Chahar tribe was greatly expanded during the reign of Dayan Khan, but because Dayan Khan divided the Chahar part to several of his eleven sons, it was inevitable that the Chahar tribe would be involved in the power struggle of the Tumut Khan's court.

By the time of Buchi Khan, the Chahar Department ushered in another important great division. In this separation, the number of subordinates of the Chahar Department was once again expanded. However, although the left-wing Mongol Chahar tribe became an important pillar of the Tumut Khanate's court, it was greatly expanded, but it was also hated by the right-wing Mongols.

Especially during the period of Buchi Khan, Buchi Khan, as a left-wing Mongolian line, relied on the strength of the Chahar Department to successfully seize the Khan's throne, and therefore constantly suppressed the right wing, greatly weakening the right-wing Mongolia, so that they could only submit to the left-wing Mongolian golden family line headed by Buchi Khan.

But it is clear that right-wing Mongolia will not rest on its laurels. In order to better deter the right-wing Mongols and maintain military pressure on the Ming Dynasty, in the era of Buchi Khan, the Chahar Department moved south for the first time and arrived at the border of the two towns of Xuanfu and Datong in the Ming Dynasty.

However, the good times did not last long, due to the outbreak of the Ulianghan rebellion, the Chahar Department had to leave the Monan region, and once again returned to the Mobei town guard, although after the Buchi Khan increased the number of Chahar troops, but the Chahar Department returned to the north, but also directly made the military pressure on the right-wing Mongolia greatly reduced, and at the same time, because of the mistake of the Buchi Khan in the separation, the right-wing Mongolia became bigger again.

At the same time as the Chahar moved northward, under the leadership of Alta, the right-wing Mongols on the one hand expressed their continued follow-up to the left-wing Buchi Khan, and on the other hand, they quietly began to expand southward, bypassing the Shaanxi-Gansu region of the Ming Dynasty and opening up new Tumut pastures in the Qinghai region. At the same time, the far-sighted Altan Khan actively accepted the fleeing Han Chinese and organized them to open up farmland and build towns in the Tumo River.

When Buchi Khan finally completed the rebellion of the Ulianghan in Mobei, he wanted to consolidate his power by integrating the right-wing Mongols, but at this time, the right-wing Mongols clearly had the power to overthrow the left-wing Khan.

At this time, Altan Khan had already controlled the entire right-wing Mongolian Zhutaiji. What's more serious is that with the northward relocation of the Chahar Department due to the needs of the war, the pastures that originally belonged to the Chahar Department have long been quickly occupied by the right-wing Mongols, and by the time Buchi Khan died of illness in Mobei, in fact, the left-wing and left-wing Mongols had been completely divided.

For the successor to the throne, Da Lai Xun Khan, I simply tore through the previous disguise, and he unceremoniously asked the young Khan king for the throne of the right-wing Mongols. And Da Lai Xun Khan himself also knew that years of conquest had actually seriously consumed the strength of the Chahar Department, and it was obviously not a wise choice to face it head-on with me at this time. Therefore, Dalai Sun Khan did not lead the Chahar Department back to the original pasture in a daze, but retreated in Mobei.

However, for the huge Chahar Ministry, the environment in Mobei is obviously too harsh, and staying in Mobei will only get weaker and weaker. In desperation, Dalai Sun Khan eventually led most of the Chahar tribe members to move south. He did not know that this southward migration of left-wing Mongolia would eventually change the history of the entire Northeast Asia and even the world in its original history.

Dalai Sun Khan began to prepare for the southward migration from the 29th year of Jiajing, but such a huge movement, the risk of its existence is naturally self-evident, so Da Lai Xun Khan divided the huge Chahar department, leaving a considerable part of it to continue to garrison in Mobei, this Chahar tribe eventually evolved into the later Khalkha Mongols, and later the Kalmyks in Russia.

This time, Da Lai Xun Khan's aim was not to lead the Chahar tribe back to their pastures north of Xuanfu Datong, because it had almost become the center of right-wing Mongol domination, and it was impossible for them to occupy it. He set his sights on the Daming Ji Town and the pastures north of Liaodong, but the fertile pastures in this area have long been mastered: living here are the Mongolian "Duoyan Sanwei" who served as the Ming Dynasty fence and vassals - readers who are familiar with the history of the Ming Dynasty must know it very well, so I will not repeat it.

In this way, this large-scale southward migration of the left-wing Mongols also became the war of conquest of Dalai Sun Khan against Duoyan Sanwei. Compared to the huge Chahar Division, the strength of Duoyan Sanwei is obviously not enough to contend with it. Therefore, in the thirtieth year of Jiajing, Duoyan Sanwei had to surrender to Da Lai Xun Khan.

However, due to the military deterrence of the Ming Dynasty, Da Lai Xun Khan did not annex the Duoyan Sanwei in one fell swoop, but left a small amount of pasture for the use of the remaining Duoyan Sanwei, which had already suffered heavy losses. Most of the Duoyan Sanwei, under the leadership of their chief, left the protection of the Ming Dynasty and chose to join the Tumut Mongols ruled by Altan Khan, and finally disappeared into the long river of history.