After the Horqin Mongols befriended the Ming Dynasty, the situation in Liaodong changed greatly, starting from Liaoyang and Shenyang, the entire Siping and Horqin Mongols became a thick piece, and then connected with the Nuergan Dusi to the northeast to form a large encirclement. Although the current Nuer Gandusi has lost control of the Jianzhou Jurchen region, it still has a certain influence on the entire northeast, and the orthodox idea of the people at that time is the sense of belonging, or the court of the Ming Dynasty.

Zhu Youxiao married Sun Chuanting, the purpose is to let Sun Chuanting marry Zaisang Buhe's daughter Borzigit Harizhula to control this tribe, once Sun Chuanting can completely control the entire Horqin Mongolia, and then let him represent the Ming Dynasty court to lobby the entire Nuer Gandu Division's domain, and then completely establish provincial, government, and county rule in the entire Nuer Gandu Division, and completely and effectively control the entire Northeast region, no longer as in history, nominally the entire Nuer Gandu Division is the domain of the Ming Dynasty, And the actual control is in the hands of the individual tribes.

Lacking strategic vision, the envoys may bring these tribes to war with each other in order to strengthen their presence, but in fact they are not strong enough to effectively control these areas. For example, Li Chengliang, although nominally he governs the entire Liaodong, including Nurhachi, is a biting dog he cultivated, suppresses the tribes that do not obey the rule, and engages in his balancing hand, but when he died, Nurhachi, who was raised by him to be fat and strong, showed his sharp claws, and quickly rose in the Liaodong region, and controlled the Jianzhou region in a very short time.

In dealing with the problems of the ethnic minority areas in the border areas, successive dynasties have made a big mistake, that is, relying on tribal forces to maintain rule, of course, it may also be difficult to achieve the country's financial and material resources, but in order to survive, these tribes will compromise with them when foreign enemies invade, and the sense of belonging to the central government is low, whether it is the Mongol Dynasty invading the Central Plains, or the Manchu regime entering the Central Plains, or the later Russian annexation of China's territory, which is particularly obvious in these places. The Qing Dynasty is especially typical in this regard, especially when the central government weakened in the late period, and its desire to possess these places weakened when foreign enemies invaded, and the intention to maintain the stability of its own territory prevailed.

In order to avoid this kind of thing, Zhu Youxiao decided to increase his rule in the entire northeast region. On the one hand, it vigorously reduced the ability of tribal forces to control ordinary people, that is, arranged for nomadic tribes to start settling, so that they had fixed living areas and solid residential houses, which not only improved their living conditions, but also changed their way of life. On the other hand, the Ministry of Rites was ordered to seek the roots in the history books to prove that the people living in these places were all descendants of Nuwa, but in the process of Nuwa's creation of people, some of the mud was thrown farther away, and they became people living far away from the Central Plains. All in all, Zhu Youxiao's goal is to give these ethnic minorities a sense of identity with the state and a strong sense of belonging to the central dynasty.

When Sun Chuanting arrived in Horqin Mongolia with more than 20,000 muskets and artillery units mixed with infantry and cavalry, the powerful weapons and equipment shocked the Horqin Mongols, and the chief leader of the tribe, Oba, felt extremely wise about his choice. At that time, the Horqin Mongols united with the Jurchens to attack the Yehnara tribe, and were defeated by the army of the Ming Dynasty without fighting back, and fled all the way to the hinterland of the territory. But when he saw Sun Chuanting's military training and live firing for him, Oba was completely convinced, because he did see the huge difference in strength between the two armies, no matter how powerful the cavalry team was, it was invincible in the face of modern machine guns and artillery, and only the desperate submission to the Ming Dynasty was the only strong and continuous way out for the Horqin Mongols.

Oba doesn't have any illusions about his ability to fight against the Ming Dynasty, so let's completely integrate into the ranks of the Ming Dynasty. Oba decided to join the official series of the Ming Dynasty himself, after a formal meeting with the Taiji, and then led these Taiji to watch Sun Chuanting's military exercises, the entire Horqin Mongol tribe completely became the Ming Dynasty, Oba was appointed by Zhu Youxiao as the first governor of the Horqin Mongolian steppe, responsible for the government affairs of the entire Horqin Mongolian steppe, Zai Sang Buhe was appointed as Oba's first assistant, and Sun Chuanting was the governor here, responsible for the military and domain security of the entire grassland, In order to protect the soil and water, protect the environment and sustainable and benign development, these Mongolians also began to half-plow and half-herd, mainly raising cattle and sheep in captivity. In order to support the change of living habits of the Mongols, the imperial court increased its support for here, a large number of cattle and sheep were purchased by merchants in the interior, and a large number of production and living materials were transported over, which was mainly breeding, supplemented by a small amount of farming, and the farming part was only carried out in a small number of heavier places, Zhu Youxiao would never allow the destruction of the grassland planting farms, and also carried out large-scale pasture planting in the desert area, and did not allow grazing at will, the purpose was to completely eliminate the desert in the entire Mongolian region, Realize a completely green Mongolian steppe, change the general environment of northern China, and make it more suitable for human habitation.

In terms of military operations, Oba and Zaisang Bu and other tribes jointly recruited 10,000 troops, all of which were handed over to Sun Chuanting for training, and Zhu Youxiao strictly ordered Sun Chuanting to strictly train the Mongol light cavalry whose control of this force belonged to Sun Chuanting, and strive to quickly integrate with the original 20,000-foot cavalry musket and artillery units as soon as possible, find out the most suitable methods and techniques for their combat, and make military preparations for the pacification of the entire northeast region in the future.

Sun Chuanting, who had infinite scenery, had a serious face, and he was followed by his newly married wife Borzigit Harijula, and the couple stood in front of the 30,000 Han and Mongolian coalition troops. For Zhu Youxiao's holy message, Sun Chuanting was very excited, he was able to get the emperor's marriage in person, and he was a very beautiful girl, he was 10,000 satisfied in his heart, and his loyalty to the emperor was very thorough, full of gratitude and worship, and he was determined to train an army that could dominate the world for the Ming Dynasty.

According to the different physical qualities and adaptability of the Han and Mongolian soldiers, Sun Chuanting trained and cultivated their coordination ability. In view of the fact that the Mongols were very familiar with immediate combat, they were equipped with a six-shot revolver that Zhu Youxiao had just developed, and a new type of steel knife made from a firearms factory. When used for a frontal assault, each warrior holds a knife in their right hand and a gun in their left hand, and once in close contact, the saber will be a secondary weapon, first to the enemy's head, then to the right shoulder, so that they lose most of their combat effectiveness, followed by a saber slash. Since when pursuing the enemy, the saber is the main weapon, catch up from behind and kill directly, once the opponent has a small group counterattack, or shoot first, and then slash, in short, save yourself, destroy the enemy as the first priority, do not have any fairness and unfairness in mind, the result of the battle depends on victory and defeat, as well as capture and loss, everything else is subordinated to this highest interest and goal.