In the late Ming Dynasty, the Jurchen tribes in the northeast gradually moved toward unification, and it was Nurhaci of the Jianzhou Department who did all this, who was also the first Great Khan of Later Jin.
During the Jiajing dynasty of the Ming Dynasty, Nurhaci was born into the family of a small chieftain in Zuowei, Jianzhou. However, because Nurhaci's mother died early, the life of their brothers was not good, and their stepmother was not good for them.
In the northeast at that time, the main military force of the Ming Dynasty was the troops of Li Chengliang, the commander-in-chief of the Liaodong Province, and Nurhaci's father, Tak Shi, and his grandfather Jue Chang'an were subsequently killed by him.
His grandfather Jue Chang'an was the commander of the left guard of Jianzhou at that time, and due to his weak strength, he was also the commander of the right guard of the "strong chieftain" of Jianzhou in the early days, who was also his relative Wang Gao.
Later, Li Chengliang led his troops to suppress Wang Gao, but Wang Gao's son Ah Tai and others became fish that slipped through the net, and In order to avenge their father, they recruited troops to buy horses, and soon grew stronger, and often harassed Mingbian.
So Li Chengliang led his troops to attack Atai, and also found the city lord of Tulum City, Nikan Wailan, and asked him to be a guide to lead the way. In fact, at that time, Jue Chang'an father and son saw the strength of the Ming army and secretly defected to the Ming Dynasty border officials in order to save their lives. They saw that Li Chengliang was going to attack Atai, so Jue Chang'an went to persuade the rebellious brother-in-law Atai, and his son TakShi went to look for his father, only to be trapped in the city. After Li Chengliang broke the city, he actually launched a massacre, and as a result, Jue Chang'an's father and son were killed.
Nurhaci was 25 years old at the time, and he had thought of resisting, but his strength was weak. However, he set his sights on Nikan Wailan, who was leading the team as a guide. In May of the eleventh year of the Wanli Calendar (1583), Nurhaci raised an army with thirteen pairs of armor left by his grandfather and father, and he was determined to fight with Nikan Wailan.
Due to his lack of strength, he and nomina, the lord of Salhu, joined forces to attack the city of Tulum, where Nikan Wailan was located, but Nomina did not go back, although he did not destroy Nikan Wailan in one fell swoop, but still won the first battle of his life. Nikan Wailan hastily fled with a few people. In the face of Nurhaci's many blows, Nikan Wailan was protected by the Ming army, but as soon as they saw that Nurhaci was strong, they did not protect him, and he was eventually defeated by Nurhaci.
And Nurhaci did not spare no one, the treacherous lord of Salhu City, and used a plan to get rid of him. After that, Nurhaci became stronger, and more and more tribes came to defect, and he defeated other powerful tribes within the Jianzhou Jurchens, such as the Zhechenbu and the Guanyanbu, and spent nearly five years unifying the Jianzhou Jurchens.
In addition to the Jianzhou Jurchens, there are also the Donghai Jurchens and the Haixi Jurchens. Since then, Nurhaci has successively annexed the Jurchen department of Haixi, conquered the Jurchen department of the East China Sea, and unified the Jurchen departments.