[Apocalypse + underground caverns + mining + frontier defense + adored by the whole family + stockpiling supplies] A female marshal from the interstellar era transmigrates to the Warring States Continent, where a meteor has just struck the earth and created underground caverns.
Her immense psychic power coalesces into a burial mound, becoming the energy that suppresses the monsters raging in the caverns. With a drop of her blood, she creates the Qian Clan.
For five hundred years, the whole family works diligently to keep the monsters in check.
Five hundred years later, the emperor turns on them and plots against her Qian descendants.
Would the clan’s matriarch put up with that?
Qian Qian fuses her soul with the body of this generation’s legitimate Qian daughter, empties the imperial palace, and leads her people west to find her burial mound.
At the same time, another meteor falls. The cavern fissures widen, monsters emerge, and a calamity that could destroy the world looms.
The caverns too dangerous? Take a look at these star crystals! Children and grandchildren, get digging!
The monsters too terrifying? Under her powerful psychic might, they’re nothing but bugs. Catch them and send them back to the emperor’s brats, then charge them for protection.
The Qian Clan: Our Qian Qian is gentle, kind, and innocent. Anyone who dares bully her had better answer to the knives in our hands!
The rulers of the Warring States Continent: Be honest with us. Who’s the scoundrel who keeps catching monsters, releasing them, and extorting us?
Could you make that MSG, cement, and firearms a little cheaper? We’ll offer our most handsome princes in exchange!
Qian Qian counts the crystals, cattle, sheep, and horses handed over by the various states, utterly unmoved.
I, your matriarch, am magnanimous.
(The romantic pairing is undecided for now, place your bets! The story focuses mainly on plot, daily life, mining, and eating and drinking.)