Su Jinning faced repeated hardships in her nine marriage attempts, and decisively tore up the marriage contract to sever her misplaced romance. Crown Prince Xiao Heng protected her with all his heart, seeking an imperial decree to grant their marriage and keep her safe. Three months after their grand wedding, Xiao Heng led a personal campaign to the northern border and died on the battlefield. Enduring her deep grief, she carried out his last command, traveling far to the frontier as an army inspector, organizing military affairs and establishing defense lines, and pacifying the rebellion of the Northern Di through three years of bloody battles. After her triumphant return, she handed back military power, holding deep affection for Xiao Heng, and with unyielding integrity guarded thousands of miles of mountains and rivers for her beloved, ultimately becoming a legendary heroine passed down through generations.