How Did Someone Who Boiled Water in a Brothel Become a National Master of a Country?

[System + No CP + Time Travel] Just travel through time, can you choose a good place? Jiang Xingchu opened her eyes and found that she had traveled to a brothel. Thank God, there is a system anyway. The system said it was okay to go home, but I had to save points. Jiang Xingchu saved people, solved the plague, and invented supplies... Eh? Why did she suddenly change from a boiler maid to the emperor's national advisor?