I transmigrated as Qin Shi Huang's savior, only to discover that I had become the greatest variable in the empire. I'm Chen Yuan, a transmigrator who can use equations to dissect warfare and a scalpel to define life. When the Black Water Dragon Banner meets the steam engine, when the Hundred Schools of Thought debate cell theory, when the world map is marked with latitude and longitude for the first time... this isn't history. It's a crushing advantage from a higher dimension. But while I help this emperor conquer the lands within sight, an invisible enemy watches from a rift in time. It turns out the greatest price of changing history is awakening history's own backlash.
