[Era + Military Marriage + Sweet Pet + Marriage First, Love Later + No Goldfinger] [Hermine pretending to be stupid VS the inhumane officer, the hero only has feelings for the heroine]

Modern-day renowned painter Li Mumian unexpectedly transmigrates into a vintage-era novel and becomes a “replacement bride” labeled as a fool. She cleverly decides to play along and marries the seemingly ruthless, single-father Lu Tingbai.

“Dad, she’s a fool.”
“Lu Yunchi! Call her Auntie!”

Li Mumian initially plans to tame the mischievous little boy, but in a twist of fate, her act is exposed.
“You’re not really a fool, are you?”
“Lu Xiaochi, you’re dead!”
“Li Mumian, be careful—I’ll tell my dad you were pretending all along.”

Despite the constant teasing and chaotic family moments:
“Tingbai~ Mumian can’t walk, pick me up~”
“Dad, Xiaochi wants a hug too!”

Li Mumian navigates life in this unfamiliar era, balancing her clever schemes, growing feelings, and the warmth of a makeshift family, all while keeping her true identity a secret.