Dou Yi, the governor of Sui Dingzhou, recruited a son-in-law for his daughter, drew two peacocks on his own screen, and then announced to the youth of Chang'an City: If there is anyone who wants to propose, give him two

"Selected in the Screen of the Birds" - Dou Yi, the governor of Sui Dingzhou, recruited a son-in-law for his daughter, drew two peacocks on his own screen, and then announced to the youth of Chang'an City: If there is a suitor who wants to propose, give him two arrows, and must shoot one peacock in each eye with both arrows to be eligible to become the son-in-law of the Dou family. The gongzi brothers of Chang'an City heard that Dou's parents were going to choose a beautiful woman, and they all flocked to it, and as a result, dozens of young people, none of them could shoot.

Finally, one day, a young man came to Dou's house and snapped two arrows, two peacocks in each eye, crisp and sharp, and in the eyes of everyone's envy and hatred, he married the long-haired beauty Dou Shi home.

This young man was Li Yuan when he was young, and this long-haired beauty Dou Shi was Li Jiancheng, Li Shimin, the mother of Li Yuanji's brothers, and empress Taimu of Li Tang.

Shortly after the birth of this Daughter of the Dou family, "her hair fell over her neck and she was three years old", and Dou's mother was princess Xiangyang of the Northern Zhou Dynasty (Yuwen Tai's fifth daughter), the sister of Emperor Wu Yuwen Yong, who loved this little niece and raised her in the palace.

Yuwen Yong married the Eastern Turk princess as an empress because of the political and military needs, and was very cold to the empress, and the young Dou clan solemnly put forward his political opinions to the emperor's uncle Yuwen Yong when no one was there: "And now that the four sides are not quiet, the Turks are still strong, may the uncle suppress his feelings and comfort the empress, so that he is thinking of Cangsheng!" As long as you really get the help of the Turks, then Jiangnan and Kanto are not enough to suffer! Yuwen Yong was surprised to hear this, and immediately adopted the little niece's suggestion.

Yang Jian usurped Zhou Jiansui, and in the face of the disaster of yuwen's imperial family, Dou Clan was sad and bitter: "Hate me for not being a boy, and cannot save the disaster of my uncle's family." Dou Yi and his wife were frightened and faceless, and Dou Yi's courage and bloodiness that did not allow Su Mei to be directly affected by his three sons.