Qianjin Princess

Qianjin was a 6th-century Sino-Tuoba poet and the wife of Taspar Qaghan, Ishbara Qaghan and Tulan Qaghan. She was killed by her husband in a political conflict.

Biography
Qianjin was born to Zhaowan Yuwen Zhao.

In 579, Taspar Qaghan hoped to ally with the Northern Zhou through marriage. Emperor Xuandi sent Taspar his niece Qianjin in return for a Northern Qi prince, an enemy of the Zhou who had taken refuge amongst the Turks. Taspar and Qianjin married after the traditional nomadic continual marriage. Later that year, the Zhou were defeated and the Sui dynasty was established. In this attack, Qianjin's father, three brothers, and two uncles were executed.

Qianjin mourned her family's slaughter and tried to convince Taspar to attack the growing Sui. After Taspar's death, she married his successor, Ishbara, whom she persuaded to attack the Sui in 582. The Turks joined forces with Yingzhou officer Gao Baoning to attack the Sui, prompting the Sui king to fortify the Great Wall of China.

The Sui hoped to ally themselves with Ishbara, so Ishbara appointed an ambassador. This angered Apa Qaghan and Da Luobian, who joined to defeat Ishbara. In response to this, Qianjin wrote to Emperor Wen of Sui, expressing her submission as a preliminary act of outreach. Through their correspondence, Ishbara proposed that Wen be considered Qianjin's father, making Wen his father-in-law and allying the Turks and Sui. Wen accepted the terms and sent an envoy to visit his "daughter." Wen also changed Qiajin's name to Princess Dayi and bestowed on her the Sui imperial family surname Yang. Qianjin went on to provide the Sui with diplomatic advice, urging them not to request ritual indications of Ishbara's status as a son-in-law.

After Ishbara died in 587, his brother Chuluohou ruled briefly. Following his death the next year, Dayi married her third husband Ishbara's son and the new ruler, Tulan Qaghan.

In 593, a Chinese turncoat fled to the Turks with claims that the former rulers of the Northern Zhou dynasty, the Yüwen family, were plotting to attack the Sui. While these rumors were false, Dayi's marriage may have been harmed by these claims.

In 589, Emperor Wen sent Dayi a room panel belonging to the recently destroyed Chen dynasty. This gift disheartened her, and she wrote a poem expressing her sorrow. When Emperor Wen learned of this poem, he was displeased. When she was suspected of resuming contact with the Western Turks, Wen feared an attack on the Sui.

In 593, when Yami Qaghan contacted the Sui regarding a marriage alliance after the death of his first wife, they replied with the demand that Dayi be killed. Ultimately, Tulan was incensed to kill Dayi in her tent. The cause of this decision was unclear, with some sources claiming it was because she gossiped about Tulan, and others claimed Tulan was slandered. Others claim that she had committed adultery. Although Dulan also requested a Sui wife, he was denied.