Chu-Han struggle for hegemony? Not anymore.
Liu Bang, Xiang Yu? Surrender or perish.
The Xiongnu knocked the gate? Xin Qin's cavalry will make the grassland remember its lessons.
When a time traveler comes to the end of Qin with a system, what he wants to do is not to survive in troubled times, but to rewrite the fate of the entire era.
From a transparent prince to the ruler of the empire, from renewing the first emperor's life to creating a foundation for eternity. This is not a person's counterattack, but the nirvana of an empire.