Agent: All Noncombatants, Evacuate Immediately!

Gu Bei transmigrates to the years of the War of Resistance Against Japan, when foreign enemies invade and the country is divided.

He had wanted to keep his head down and live in peace, but national and personal vendettas lead him to resolutely become a spy.

With a superweapon System, he becomes a walking weapon of mass destruction.

Contact station chief: I only asked you to make some weapons so we could break through. Why is everyone dead?

Gu Bei: If I didn't kill them all, how could we break through?

Underground group leader: We only needed to blow up a train. How did you flatten the whole mountain?

Gu Bei: "I didn't control the amount properly. I'll be more careful next time."

Leader of a civilian organization: That ship is full of opium. Sink it. We'll need a cannon for that.

Gu Bei: No need. This grenade of mine works just fine.

Gu Bei's name spreads far and wide. His identity as a top spy is exposed, yet no one dares come looking for trouble.

Special High Police: No one can escape assassination. Requesting permission to direct operations at home.

Japanese general: The enemy has already acquired weapons of mass destruction. Requesting a withdrawal.

Leaders of various nations: Everyone, pull out. Xia Country can no longer be bullied by just anyone like before.

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