Su Ran, a top student in the Department of Modern History, accidentally triggered a mysterious mechanism during an archaeological expedition and traveled to the fictional Chu Dynasty. As soon as he opened his eyes, he was chased as an assassin. When he was desperate, he relied on modern knowledge to skillfully resolve the crisis and accidentally obtained a "god-level historical system". From then on, Su Ran used history as a guide and used modern wisdom to stir up troubles in this ancient world. Is it to help a down-and-out prince ascend to the throne, or to break the feudal ethics and implement a new system? Every choice Su Ran makes will affect the direction of the world, and can he find his way home in this strange world?