You Sent Me Undercover, So Why the Hell Did I Marry the Empress?

Su Yu transmigrated to a fantasy world and became a spy sent by the Great Qian Dynasty to the Great Feng Dynasty.

Fortunately, he unexpectedly activated a Promotion System. Every promotion earned him various rewards from the System.

He joined the Northern Garrison Office, subdued rebellious princes, supported the Crown Prince, and settled disputes across the martial world.

"Promoted to Lieutenant, reward: Sacred Heart Art."

"Promoted to Banner Captain, reward: Netherworld Breaker."

"Promoted to Pacification Commissioner, reward: Void Devouring Flame."

"Promoted to Commander, reward: Tremor-Tremor Fruit."

Until one day, a million-strong Great Feng army besieged the Great Qian capital.

At the brink of the dynasty's fall, Great Qian discovered that the spy it had sent to Great Feng years ago had now become the consort of Great Feng's Empress?

Great Qian was on the verge of tears: "We sent you to be a spy, and you not only married Great Feng's Empress, you even brought an army to destroy Great Qian?"

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.