Lonely letter, the original name of lonely as desired, humble people. He was a famous general of the Western Wei and Northern Zhou Dynasties, and one of the Eight Pillar States of the Guanlong Clique.

Dugu Xinyi is handsome, a beautiful man, and good at riding and shooting. The most amazing thing is that he has seven daughters, three of whom are married to the emperor, and these three sons-in-law are three different dynasties, which can be called the three dynasties of the country, it can be said that Dugu Xin is the most able to marry daughters in Chinese history, the most cattle father-in-law.
His eldest daughter, Dugu Shi, was Empress Mingjing of Northern Zhou. She married Yuwen Yu, the eldest son of Taishi Yuwen Taishu. With the deposing of the chancellor Yuwen Hu and the deposing of Emperor Xiaomin Yuwen Jue, Yuwen Yu ascended the throne as The Heavenly King, he was crowned queen. Unfortunately, Empress Mingjing only served as empress for three months, and then she died because of difficult childbirth.
His fourth daughter, Dugu Mantuo, was Empress Yuanzhen, and she married Li Xun, the third son of Tang Taizu Li Hu. Li Hu was also one of the Eight Pillar States of Western Wei, and although Li Xun had never been emperor, Li Yuan posthumously honored him as Emperor Yuan after establishing the Tang Dynasty. Dugu Mantuo gave birth to Li Yuan, the founder of the Tang Dynasty. There is also the famous Tang Taizong Li Shimin who is her grandson.
His seventh daughter, Dugu Jialuo, was a famous Dugu Empress in history, and married Yang Jian, the founding emperor of the Sui Dynasty. Dugu Xin took a fancy to Yang Jianxiang, the eldest son of his old friend Yang Zhong, who had a strange appearance and extraordinary temperament, so he married the fourteen-year-old Dugu Jialuo to him. Dugu Jia luo was low-key and humble to the outside, loving to the internal husband and wife, had ten children, and assisted Yang Jian in establishing the Sui Dynasty, and Yang Guang, the Sui Emperor of sui II, was their second son.
Dugu Xin is the most capable of marrying daughters, and all three of his daughters are married to the emperor, which is unique in Chinese history.