Modern knowledge novels feature protagonists who leverage their 21st-century expertise to dominate historical, fantasy, or cultivation settings. Whether it is a transmigrated engineer building steam engines in a medieval kingdom or a doctor introducing penicillin to a sect of immortal cultivators, these stories thrive on the clash between old-world traditions and technological innovation. Readers are drawn to the satisfying intellectual progression as heroes use chemistry, economics, and modern warfare tactics to outsmart primitive rivals and build powerful empires from scratch. Common tropes include industrial revolutions, reinventing gunpowder, and the inevitable 'face-slapping' of arrogant locals who underestimate the power of science. If you enjoy watching a protagonist reshape history through strategic world-building and superior logic, this genre offers the ultimate wish-fulfillment experience.