The Eldest Princess, but There Is a Human Emperor System

Jiang Xian traveled through time. The good news is that she has transformed into the princess of a country, with high position and great honor; The bad news is that they are about to face the risk of annihilation of the country. In short, it is either death or death. Jiang Xian: "..." The system that takes her through time: Do you want to survive? Then let's fight with the people of Daqi! The first step to save your life - wear a yellow robe and ascend to the throne! Jiang Xian (shocked): Huh? I? ! In the first year of Kaiyuan, the barriers between humans and demons disappeared, the demon army invaded the human world in large numbers, and the human race was endangered. Jiang Xian, the eldest princess of the Daqi royal family, overcame all the princes and ascended the throne, leading the human soldiers to fight against the demon army and stabilize the Daqi Kingdom Zuo. Jiang Xian (forcing a smile): The country won't be destroyed now, right? The second step to save your life is to get rid of internal worries and strengthen infrastructure! Jiang Xian: Is it over yet? System: Don't worry, it's not over yet! The third step to save your life—famous in the three worlds and a story for the ages! Jiang Xian: Cough cough cough cough! Isn't this a bit exaggerated? System: How to create a myth if the goal is not big? Jiang Xian: ... Same. Intention: The river is clear and the sea is peaceful, and the world is peaceful