I Recreate the Glory of the Nine Empires in Another World

[Single heroine + different world + time travel + no system + tsundere female emperor + alternate history + fantasy adventure + different world in Western Europe] A reminder before viewing, this article supports readers with insufficient equipment to read without thinking, but the minimum equipment requires one eye or one ear, more than one is not required. My name is Melinks Li Xiao, a Finnish college student, majoring in history. I died of illness in my freshman year. But when I woke up, I found that I had traveled to a different world, but this different world seemed to be a hodgepodge of Europe. The administration was like Napoleon, the architectural aesthetics were like Victoria, and the army was like Germany. Her Majesty was still the Queen, and she still lived in the Palace of Fontainebleau. But this country seems to be a low-demon world with its own history and rules. Before traveling, I heard a voice saying that I should stop His Majesty from leading the country to the old mustache path within one year, and then His Majesty was killed. But there are also many problems in this country. The emperor's power is low, and his authority seems to be nothing but roaring, which makes him feel a little bit ignored. I don't know how the emperor went so far as to be so militaristic, but my mission required me to prevent His Majesty from engaging in Legalist thought, but I was not allowed to engage in it. It just so happens that I am from the Department of History, my professional counterpart. Since then, if you break the law, then I will do it. I will put the experience of the predecessors there, and I will be responsible for all the consequences!