The "Golden Casket Alliance" left over from the Zhao Kuangyin period triggered a dispute over imperial power in the Song court. Liu E was originally an orphan in Shu. She met and fell in love with the third prince Zhao Heng during the war. The two experienced the rebellion of the King of Qin, the three sons' fight for the throne, and the Battle of Chanzhou, and finally got their reward. Liu E was talented and handled political affairs with great care and respect, and was deeply trusted and relied on by Zhao Heng. Zhao Heng lost several princes in succession, and the succession to the throne was imminent. The ministers and clan forces in the court either fought each other or secretly formed alliances for their own interests, and the Song Dynasty faced an unprecedented crisis. When Zhao Heng passed away, Renzong was young and weak. In order to fulfill the last wish of the previous emperor, Liu E presided over the court affairs behind the curtain, ended party disputes, built water conservancy projects, established welfare, properly resolved the disputes and unrest among the surrounding ethnic groups, and boldly used new talents such as Fan Zhongyan, Yan Shu, and Su Xun, laying a solid foundation for the "Renzong's prosperity" for more than 40 years after Renzong took power.