The Phoenix Leads into the Spring Day

The Qin family's ancestral manual contains a saying: "Master math and science, and you can go anywhere without fear."

Qin Fengyi only understood its true meaning after being tortured to death and reborn.

Her once-in-demand ex-husband, whom she thought was the enemy who had caused her horrible death and slaughtered her whole family, turns out to be the benefactor who burned through three years of his life force to help her be reborn in a new body.

Well, that's awkward...

Later, he becomes the Regent of the Southern Kingdom, while she becomes the eldest princess of the Northern Kingdom. She says she doesn't want to go live in someone else's household as a virtuous wife again. He replies, "All right, then I'll marry into yours!"

[Who taught the hairpin and swallow to part so easily, the paired mandarin ducks in the mirror to tire of dancing? How many spring afternoons have been wasted?]

Farming + household intrigue + rekindled love + groveling ex + two powerful leads