During the troubled times of the Southern and Northern Dynasties, regimes changed frequently. The wise minister Dugu Xin of the Northern Zhou Dynasty attracted much attention for his prophecy of "Dugu Tianxia". The three daughters under his knees are all beautiful and fragrant. The eldest daughter Dugu Prajna wanted to be a queen to fulfill the prophecy, so she gave up her love and married into the Northern Zhou Dynasty royal family. She finally got her wish and became the most noble woman in the world, but unfortunately she died unexpectedly in childbirth. Dugu Xin was implicated in this incident and was framed by political opponents. In order to protect his family, he had no choice but to commit suicide. The once prominent Dugu family has since declined.