From the Start, I Saved Princess Changle, and Li Shimin Owes Me Three Lives

After transmigrating to the Tang dynasty, I gain a “millennium knowledge database” and peerless martial arts from the start.

Before the Xuanwu Gate, my sword flashes like a streak of cold light, saving Li Shimin, Empress Zhangsun, and Princess Changle from death!

Li Shimin immediately declares, “I’ll give you half the Tang Empire!”

I wave him off. All I want is to go back to my hometown and quietly teach my younger sister.

I teach her physics, and she invents cannons.

I teach her economics, and she buys out the Five Great Clans.

I teach her the art of ruling, and somehow she puts the imperial robe on me!

In just three years, Tang banners are flying across the whole of Europe.

Li Shimin is at a loss: “Nephew, could you at least leave me a little territory?”