Don't lose your wits + farming + struggle for hegemony + infrastructure + technological crushing + intrigue + reality. Slow and hot, no system, no dragon and proud sky.
Li Kai, a top student in the Department of Modern History and a civil engineer, traveled to an fictional dynasty similar to the late Song Dynasty called "Dayu" and became the son of a criminal official who was exiled to the border. Faced with a barren land and an eyeing alien race, he relied on his engineering technology, organizational management capabilities, and historical perspective that transcended the times to build water conservancy, build workshops, open new schools, and train a new army from scratch. When the world was in chaos and the dynasty was in decline, he was forced to move from behind the scenes to the front, using the borderlands as a basis to start a path of hegemony to save civilization and rebuild the world.
