Start by Traveling Through Time and Become an Ancient Prince.

[Refreshing article + time travel + woman disguised as a man + fighting for hegemony infrastructure in troubled times + system + imagination] The aloof and smiling tiger empress × the humble loyal dog general At the beginning, she becomes a female prince in troubled times who disguises herself as a man. She uses the system to invent modern technology, collects civil servants and generals, and pacifies the world.