[Historical setting + official career + multiple heroines + System + decisive and ruthless]
Everyone laughs at Su Chen, a penniless scholar who marries one wife after another and has child after child. They say he'll squander his family fortune before long.
Until one day...
When the Xiongnu invade, his second son leads the cavalry to crush their royal court and is named Grand General Who Guards the Nation.
In the factional struggles at court, his eldest son earns the top honors in all three imperial examinations, enters the cabinet as chancellor, and takes charge of the civil officials.
With the national treasury empty, his third daughter, richer than the state itself, casually donates ten million taels of silver to replenish it.
When an enemy nation sends its finest assassins, his wives and concubines, one a martial arts alliance leader, one a master of medicine and poison, and one a former dynasty's strategist, wipe them all out.
Only then does the world realize that this impoverished scholar, who rose to power by having children, has long been controlling the entire realm without anyone noticing!
Just then, Su Chen glances at the System panel and sees yet another child about to be born. He lightly taps the arm of the dragon throne and smiles.
No rush. My empire can still grow a little larger.