Three Kingdoms: I Roast Lu Bu, and He Eavesdrops and Wants Me as His Son-in-Law

In the third year of Chuping, the realm is in chaos as warlords fight for control of the Central Plains. Qin Yan, who has transmigrated into the body of a refugee in Guanzhong, thinks the day has finally come for the System to bind itself to him and give him a chance to turn his life around. Instead, he's greeted by a damaged marriage contract soaked in blood.

Qin Yan: "General, Lü Bu is brave but lacks strategy. How can he survive the Xiliang army's siege?"

Lü Bu: "I'll take your advice. I'll put the entire army in your hands, too."

Become Lü Bu's strategist?

That sounds like a great way to get buried alongside the treacherous man who served three masters.

Might as well join Cao Cao!

Just as Qin Yan wonders whether to make a run for it with some excuse like "I'm of limited ability and wouldn't dare presume to advise you"...

Lü Bu: "Qin, you think my family can't offer you a way to survive, hmm? Then perhaps I should add my daughter Lingqi to the bargain..."

Qin Yan: Then I definitely can't run!

To survive in this chaotic age, Qin Yan is forced onto the path of contending for supremacy in the late Han Dynasty.

Then a squad leader stands up and says, "My name's Lü Bu. I hear you want to ride on my coattails?"

Qin Yan is mortified on the spot!

See how a modern-day nobody at fighting turns his foreknowledge of history and industrial technology into tools to bluff his father-in-law, transform the Bingzhou Iron Cavalry, and conquer the world!