[Transmigrates to ancient times + alternate history + no System + invents things to make money + writes poetry to show off]
Lu Yuan transmigrated as the eldest legitimate son of a duke in the Great Jing Kingdom. When he learned he was expected to marry Princess Li Changhuan, he had no choice but to join forces with the imperial family to make money so he could call off the engagement. From then on, Great Jing lost a wastrel and gained a great inventor.
Mosquito coils, floral water, horseshoes, glass, brewing, gunpowder cannons...
Why marry a princess? Even a dog wouldn't marry a princess!
Heh! But this princess is actually pretty great!
Not long after the engagement was called off, however, Princess Li Changhuan regretted it.
“How can he be so talented? I regret it so much!”
“Lu Yuan, come back! I was wrong! Will you marry me?”
Empress Dowager Dugu: “The sanitary pads Lu Yuan invented are the greatest invention of all.”
Duke of Cao Cheng Jingyun was having none of it. He insisted toilet paper was the greatest invention, since from then on taking a dump would just be called taking a dump, not bathing and changing clothes!
Lu Yuan: ...