The Mongol Empire conquered all Manchuria (modern Northeast China and Outer Manchuria) in the 13th century and it was put under the rule of the Yuan dynasty established by Kublai Khan.
After the overthrow of the Mongol Yuan dynasty by the Han Chinese Ming dynasty in 1368, Manchuria was still under control of the Mongols of the Northern Yuan dynasty based in Mongolia.
Naghachu, a former Yuan official and a Uriankhai general of the Northern Yuan dynasty, won hegemony over the Mongol tribes in Manchuria (Liaoyang province of the former Yuan dynasty).
As he grew strong in the northeast, the Ming decided to defeat him instead of waiting for the Mongols to attack.
In 1387 the Ming sent a military campaign to attack Naghachu, which concluded with the surrender of Naghachu and Ming conquest of Manchuria.

The early Ming court did not impose as much control on the Jurchens as the Mongols did; it did not tax them, and did not set up postal stations in Liaodong and northern Manchuria (as the Yuan dynasty had), which would have promoted control.
Despite this, the Ming court set up guards (衛, wei) in Lingdong under the Hongwu Emperor and in northern Manchuria later under the Yongle Emperor.
However, the Jurchen leaders continued to collect the taxes and raise armies for themselves.
Jurchen society did not become sinicized; the guards served to reaffirm traditional Chinese foreign relations.

By the end of the Hongwu reign, the essentials of a policy toward the Jurchens had taken shape.
Most of the inhabitants of Manchuria, except for the wild Jurchens, were at peace with China.
Yet a suitable relationship between Ming China and their neighbors to the northeast had not been established.
The guard system had scarcely reached into northern Manchuria, and the regulations for tribute and commerce were still relatively uniformed.
The Yongle Emperor once again was responsible for devising the framework for Ming-Jurchen relations.
He sought peace with the Jurchens and tried to prevent them from allying with the Mongols or the Koreans to pose threats to the Chinese borderlands.
One way of winning over the Jurchens was to initiate a regular system of tribute and trade, a boon to these northeastern neighbors, as well as to the Ming, which needed and coveted certain Jurchen products.
Finally, the emperor distinguished between Liaodong and the other Jurchen areas farther to the north.
Liaodong was to be part of the normal administrative system of the Ming, with the creation of a Regional Military Commission and a commensurate set of military and fiscal obligations which were similar to those imposed upon and generally fulfilled by provinces in China proper.
And in northern Manchuria, the Yongle Emperor had created a series of guards and had superseded Korean influence among the Jurchens.
He had archived peace in the Jurchen lands adjacent to the Tumen, Amur, Songhua, and Ussuri rivers, and the Chinese government had developed expertise about the different Jurchen groups and leaders.
Chinese cultural and religious influence such as Chinese New Year, the "Chinese god", Chinese motifs like the dragon, spirals, scrolls, and material goods like agriculture, husbandry, heating, iron cooking pots, silk, and cotton spread among the Amur natives like the Udeghes, Ulchis, and Nanais.

However, the creation of a guard did not necessarily imply political control.
In 1409, the Ming dynasty under Yongle Emperor established the Nurgan Regional Military Commission on the banks of the Amur River, and Yishiha, a eunuch of Haixi Jurchen derivation, was ordered to lead an expedition to the mouth of the Amur to pacify the Wild Jurchens.
The reception he was accorded by Jurchen chiefs was cordial, and he responded by providing them with gifts.
They, in turn, agreed to the Ming creation of the Nurgan Regional Military Commission and to the dispatch of a tribute mission to accompany Yishiha back to the court.
In 1413, the emperor again sent Yishiha to Nurgan to meet with the Jurchen chiefs and to build the Yongning temple in an attempt to promote Buddhism among the least s
The Mongol Empire conquered all Manchuria (modern Northeast China and Outer Manchuria) in the 13th century and it was put under the rule of the Yuan dynasty established by Kublai Khan. After the overthrow of the Mongol Yuan dynasty by the Han Chinese Ming dynasty in 1368, Manchuria was still under control of the Mongols of the Northern Yuan dynasty based in Mongolia. Naghachu, a former Yuan official and a Uriankhai general of the Northern Yuan dynasty, won hegemony over the Mongol tribes in Manchuria (Liaoyang province of the former Yuan dynasty). As he grew strong in the northeast, the Ming decided to defeat him instead of waiting for the Mongols to attack. In 1387 the Ming sent a military campaign to attack Naghachu, which concluded with the surrender of Naghachu and Ming conquest of Manchuria.
The early Ming court did not impose as much control on the Jurchens as the Mongols did; it did not tax them, and did not set up postal stations in Liaodong and northern Manchuria (as the Yuan dynasty had), which would have promoted control. Despite this, the Ming court set up guards (衛, wei) in Lingdong under the Hongwu Emperor and in northern Manchuria later under the Yongle Emperor. However, the Jurchen leaders continued to collect the taxes and raise armies for themselves. Jurchen society did not become sinicized; the guards served to reaffirm traditional Chinese foreign relations.
By the end of the Hongwu reign, the essentials of a policy toward the Jurchens had taken shape. Most of the inhabitants of Manchuria, except for the wild Jurchens, were at peace with China. Yet a suitable relationship between Ming China and their neighbors to the northeast had not been established. The guard system had scarcely reached into northern Manchuria, and the regulations for tribute and commerce were still relatively uniformed. The Yongle Emperor once again was responsible for devising the framework for Ming-Jurchen relations. He sought peace with the Jurchens and tried to prevent them from allying with the Mongols or the Koreans to pose threats to the Chinese borderlands. One way of winning over the Jurchens was to initiate a regular system of tribute and trade, a boon to these northeastern neighbors, as well as to the Ming, which needed and coveted certain Jurchen products. Finally, the emperor distinguished between Liaodong and the other Jurchen areas farther to the north. Liaodong was to be part of the normal administrative system of the Ming, with the creation of a Regional Military Commission and a commensurate set of military and fiscal obligations which were similar to those imposed upon and generally fulfilled by provinces in China proper. And in northern Manchuria, the Yongle Emperor had created a series of guards and had superseded Korean influence among the Jurchens. He had archived peace in the Jurchen lands adjacent to the Tumen, Amur, Songhua, and Ussuri rivers, and the Chinese government had developed expertise about the different Jurchen groups and leaders. Chinese cultural and religious influence such as Chinese New Year, the "Chinese god", Chinese motifs like the dragon, spirals, scrolls, and material goods like agriculture, husbandry, heating, iron cooking pots, silk, and cotton spread among the Amur natives like the Udeghes, Ulchis, and Nanais.
However, the creation of a guard did not necessarily imply political control. In 1409, the Ming dynasty under Yongle Emperor established the Nurgan Regional Military Commission on the banks of the Amur River, and Yishiha, a eunuch of Haixi Jurchen derivation, was ordered to lead an expedition to the mouth of the Amur to pacify the Wild Jurchens. The reception he was accorded by Jurchen chiefs was cordial, and he responded by providing them with gifts. They, in turn, agreed to the Ming creation of the Nurgan Regional Military Commission and to the dispatch of a tribute mission to accompany Yishiha back to the court. In 1413, the emperor again sent Yishiha to Nurgan to meet with the Jurchen chiefs and to build the Yongning temple in an attempt to promote Buddhism among the least s
Manchuria under Ming rule