Princess in Dragon Robes: The Minister Can't Take It

Su Chang'an transmigrates as Princess Luo Shuixian of Anping. In a crisis, she awakens a system, successfully resolves the danger, and engages in dual cultivation with it. After escaping prison with the system's help, her power ascends. During her investigation, she meets an extraordinary woman; after another round of dual cultivation, her strength surges. Meanwhile, she forms a deadly grudge with the Black Sha Lord, repeatedly uncovering and foiling his assassination plots. Finally, Su Chang'an assists herself (Luo Shuixian) in ascending the throne. She then accepts the princess's abdication, seizes control, gradually pacifies the war, unifies multiple nations, and becomes a legendary emperor.