I Hid My Cultivation for Ten Years, Then Struck as a Sword Immortal

[No System + political intrigue + cautious development + logical plot + suspense + ancient espionage + alternate history + low fantasy + the martial world and the imperial court]

On the very first day after being reborn into the marquis's household, Qin Yuan is poisoned. After escaping, he turns to his grandfather, a duke, and begins his rise to power.

In court, he is Qin Yuan, the Prince of Qin!

He reforms the government, making the nation rich and its people strong.

He pacifies Nanyue, defeating five kingdoms single-handedly!

He opens up the Western Regions and establishes trade routes between East and West!

He quells the Rebellion of the Eight Princes and safeguards the new emperor's realm!

He reclaims the sixteen prefectures of Northern Yan, territory lost for three hundred years!

In business, he is Zheng Sanqian.

He invents all kinds of novel goods and amasses the wealth of the world, becoming richer than the state!

But one day, a child emperor takes the throne, and the empress dowager usurps power. First she takes his wealth, then his authority. In the end, she even tries to have him killed!

Qin Yuan enters the imperial city alone, sword in hand.

“For over thirty years, I, Qin Yuan, have earned the trust of two emperors. I conquered most of this realm, and I have a clear conscience before both the late emperor and the nation!”

“Now you would slaughter my kin, kill my wife and children, and take my life! Hmph! You know me as the Prince of Qin, but do not forget that I am also the greatest martial artist in the realm!”

“Who here dares kill me today? Who dares!”