My Princess Is from the Future

"Zhuangzi: Mountain Trees" says: A gentleman should be among the trees and geese, and there should be changes like dragons and snakes. Li Yi felt something was wrong. It's true that I'm at war, Why did my soon-to-be princess who stayed in the capital sneak out? It's true that I am a prince, Why does this princess-to-be say she is a flower of some kind of motherland? I really want to usurp the throne, Why does my princess from the future want to be my staff? Ps: single heroine + no noob + daily life Strictly speaking, this is a story about ancient people and modern people running in both directions.