A Song of the Rhapsody of the Luo River from the Start, and the Commandery Princess Recruits Me into Her Residence

Cao Xuan transmigrated to Daxia and became a prince's live-in son-in-law thanks to one poem, "Rhapsody on the Goddess of the Luo River."

But being a live-in son-in-law wasn't easy. The princess gave him the title, but refused to share her bed.

So Cao Xuan brought out a trove of "ancestral crafts": Tang and Song poetry, coal stoves, curved-plowshares, horseshoes, blast-furnace ironmaking, Arabic numerals...

From Jinyang to Shang'an, from the imperial court to the borderlands, he turned himself from a live-in son-in-law into the ultimate cheat code.

"What? A great Confucian scholar from Qi wants to challenge me to a math contest?"

"Hang him upside down."

"What? The young master of the Su family wants to steal my wife?"

"Castrate him."

"What? A hundred and fifty thousand northern cavalry are about to breach Yanmen Pass?"

Cao Xuan took up his blade, mounted his horse, and turned to look at the red-clad figure atop the city wall.

"My lady, wait for me to return."

There is no such thing as a live-in son-in-law's rise to power. There is only a man who uses a thousand years of wisdom to carve out a chance to survive for a city and the woman he loves.