She was the daughter of a noble Jurchen nobleman, who lost her father at the age of 21 and was raised in the palace by Nurhaci, who married someone else at the age of 28 as a "second marriage", becoming the first princess of the Qing Dynasty to marry a foreign Mongolian princess, and she was bayotegger, the only adopted daughter of the Qing Taizu Nurhaci, namely Ai xinjue luo Sundai.
On June 21, the eighteenth year of the Ming Dynasty (1590), Sun Dai was born in Jianzhou Jurchen, the father was Shu'erhaqi, and the mother was Shu'erhaqi's successor Fujin Guarjia.
First, let's talk about the relationship between Nurhaci and Shulhazi.
Nurhaci and Shulhazi were brothers of the same mother, and in the early years, the stepmother Nara was very bad for the brothers, and the brothers ran away from home to work hard. Later, the two brothers relied on the thirteen pairs of armor left by their father and ancestors to start the journey of unifying the Jurchen departments. In the early stages of unifying the Jurchen tribes, Shulhaqi became the right-hand man and right arm of his elder brother Nurhaci, and gradually became the second most important person in Manchuria.
However, since the twenty-third year of the Wanli Calendar (1595), when Shulhazi led the Jianzhou delegation to Pay Tribute to Beijing, he and his brother Nurhaci gradually became bitter, Shulhazi did not want to be subordinate to his brother, he also wanted to become a hegemon, at that time, Shulhazi often disagreed with his brother Nurhaci at meetings, and the brothers gradually reached the level of irreconcilability.
In the thirty-fifth year of the Wanli Calendar (1607), Shulhazi actually negotiated with his eldest son Altuna and his third son Zasaktu to establish another portal, so he came to The Black Rip Wood southeast of Tieling. Nurhaci would never allow the state to split, and he immediately took decisive measures to execute Shulhazi's eldest son, Altona, and third son Zasaktu, and only after the intercession of Emperor Taiji and others did he leave Shulhazi's second son Amin.
Subsequently, Shulhazi was also imprisoned in a dark room by Nurhaci, locked with an iron lock, leaving only two holes to deliver food, and two years later (1611), Shulhazi died in captivity at the age of 48, and it is rumored that Shulhazi was secretly executed by his brother Nurhaci.
Although Shulhazi was executed by his brother, some of his children were not implicated, such as the sixth son Zilharang was adopted by Nurhaci, was reused, and later even became the auxiliary king of the Qing Dynasty, becoming the only iron hat king who was not of the Nurhaci lineage. In addition, Nurhaci also took his younger brother Shulhaqi's fourth daughter, SunDai, to the palace to raise.
In the second year of the Mandate of Heaven (1617), the 28-year-old Sundaigege married the Khalkha Mongol Borzigit Bayotetai Gienggdri, becoming the first princess in Manchuria to marry into the Outer Mongols, when Sundaigege was already 28 years old, which seemed extremely abnormal in ancient times when early marriage was advocated, so some people think that Sundegge may have had a marriage before.
After Emperor Taiji succeeded to the throne, he took great care of his sister Sun Dai and made her Princess Heshuo, who lived until the sixth year of Shunzhi before dying at the age of 60, which was also a high life expectancy at that time.
It is worth mentioning that in addition to Bayoteg, Nurhaci also has an adopted granddaughter, she is nurhaci's second daughter from gulun, this princess was first married to Taijioba of the Borjigit clan of the Mongolian Korqin tribe, and later remarried to Badali, prince of Tushetu, Mongolia, and later was named Princess Heshuo by Emperor Taiji, called Princess Guzhe, who died in the fifth year of Shunzhi at the age of 37.
References: Records of Emperor Wu of the Qing Dynasty, Records of Manchuria, Four Genealogies of the Qing Imperial Family