Nurhaci did not clearly indicate who was the heir to the Khan throne, but this does not mean that Nurhaci didn't plan his own affairs, but that he really didn't know who would take on the important task of Later Jin . Before the founding of the Later Jin Dynasty, he wanted to let his eldest son Chu Ying take over, but later he was imprisoned in prison for "disobedience". Later, he intended to let his second son, , succeed Shan , but it ended in vain. Until the 12th day of the first lunar month of the sixth year of Tianming, Nurhaci, Daishan, Huang Taiji and other sons swore to Tian Burying Incense, asking their descendants to assist each other and not kill each other; February also ordered Daishan, Amin , Mangguertai , and Huang Taiji to "divided directly by month". This move also shows a signal that the heir to the Khan throne will be selected among these four major Baylors.

Nurhaci's younger brother and Amin's father Shurhazi In his early years, he wanted to challenge Nurhaci's power, but was later banned until his death. Amin also made a big mistake during this period. Although he survived his death due to his outstanding military achievements, the Khan position had nothing to do with him.
Sanbeimangurdai was born to Gunde, who turned out to be the wife of Nurhaci's cousin Wei Zhun. After Wei Zhun died in battle, he remarried Nurhaci.
Date in March of the fifth year of the fifth year, Gun Dai was convicted. There is only one vague sentence in "Draft History of Qing ": "Dare to the fifth year of the great life, the concubine will offend her and die." What crime? Don't know; how did you die? Don't know either. However, later Huang Taiji Zeng Xiu revealed that Gang Dai was killed by her biological son Mangguertai. Although Mangurdai's murder of his mother won Nurhaci's trust, his reputation was not good after all. His prestige dropped drastically among his brothers and the eight nobles. It can be said that he no longer has the strength to compete for the Khan position.
Except for Amin and Mangourtai who have withdrawn from the competition for the Khan position, among the other two major Baylors, the one with the most hope of inheriting the Khan position is the Great Baylor Daishan.
Daishan has been following Nurhaci since childhood and fought with Nurhaci in all directions. Gradually grew into a powerful general under Nurhaci's tent. In the battle to attack the Haixi Jurchens, Dai Shan made great contributions and became famous in one fell swoop. Immediately afterwards, he made countless achievements in the battle against Ula tribe and Yehe tribe . In the first year of his life, Daishan, favored by Nurhachi, was named Beile, ranking first among the four Beile, and his glorious military career began.

When Nurhaci completed the unification of Liaodong and began to attack Ming Dynasty , Daishan participated in almost all battles as the commander-in-chief. Even the Battle of Sarhu, which determined the fate of history, left Daishan's footprints.
However, Daishan failed to obtain the glory of inheriting the Khan throne.
In March of the fifth year of Tianming of the Later Jin Dynasty, Nurhaci's little concubine Deyinze reported to Nurhaci that Daishan and his stepmother Daweijin had an extraordinary relationship: "The Grand concubine once prepared food twice and sent it to Dabeile, and Dabeile received it and ate it. Once again, he sent food to the Four Beile, but the Four Beile received it but did not eat it. Moreover, the Grand concubine sent people to the Great Beile's house twice or three times a day. I wish I had a complicity in this relationship! The Concubine was discharged from the hospital late at night." (" Manchu Old Archive " in the Later Jin Dynasty)
After hearing this, Nurhaci quickly sent four ministers to Daishan and Huang Taiji to verify the matter, and the investigation result was indeed the case.
Although Daishan was forgiven by Nurhaci, it was a serious blow to his reputation. This was an unspeakable scandal after all.
However, there are many doubts about this: the great concubine sent Dai Shan to Dai Shan, Dai Shan to eat; the food was delivered to Huang Taiji, Huang Taiji "received but refused to eat", how did a young concubine in the deep palace know? It can be inferred that behind this matter is Huang Taiji's instructing him: not only the deposed Grand Marshal, but also the honor of having dinner with Nurhaci, but also the infamous reputation of Dai Shan and the biggest obstacle on the road to ascending the throne.
The four major belles have gone third, but Huang Taiji cannot say that he is already in the position of his khan. He has an opponent that cannot be ignored Dorgon .
Dorgon is smart by nature and is quite popular with Nurhaci. More importantly, Dorgon's mother Abahai is a force that cannot be ignored.This woman is ambitious and resourceful. The three sons she gave birth to are strong in Nurhaci's eight belles. She is determined to inherit the Khan throne. The most terrifying thing for Huang Taiji was that Nurhaci did not leave any last words for who would inherit the Khan throne. Four days before Nurhaci's death, only Abahai was ordered to serve. In those days, only Abahai knew what Nurhaci said about the issue of the Khan throne. That's why, no matter what Abahai said, it had a high credibility. If Huang Taiji did not eliminate Abahai, she could lie to the "left order" and appoint Nurhaci the power of title, reward, demotion, and admonition on behalf of Nurhaci. In this way, how could he be Huang Taiji have nothing to do?

No matter how shrewd Abahai is, he would not have thought that the day of losing his husband is the time of his death. Under the coercion of Huang Taiji and other beiles, she died for Khan the next day after Nurhaci's death.
In the official books of the Qing Dynasty, Abahai's burial process was only a few strokes.