Miss Si's feigned innocence went too far, and the aloof Mr. Bo was easily swayed.

[A cunning male lead who bows his head to those in power + a seemingly innocent but actually ruthless female lead + revenge against scumbags + breaking old feudal traditions + sweet romance with a five-year age gap]
On the day her fiancé abandoned her and sent her into the lion's den, Si Yuan simply took a big gamble—
She slept with the powerful and influential Master Bo, whom no one dared to offend.
"Ninth Master, I'm completely natural and untainted; no one can compare to my skill in serving people."
She fell for him overnight, had her hymen repaired, and personally shattered her dignified persona.
He's ruthless in breaking off engagements and slapping people in the face, merciless in punishing scum and trampling on the lowly, climbing his way up by stepping on old feudal rules.
Everyone was waiting for her to suffer a terrible fall from grace, but instead, she transformed into the darling of Master Bo.
In the eyes of the world, Bo Yusen is a cold and aloof flower, sacred and inviolable.
But no one knew that every night, this sinister and ruthless ruler would hold Si Yuan tightly in his arms, pinching her earlobe and threatening in a low, hoarse voice like a clinging ghost: "You used me to get to the top, and you'll have to pay for it for the rest of your life."
Early stage:
Bo Yusen: This woman has an angelic face but a devilish heart; she's got some serious charm.
Si Yuan: Ninth Master Bo? He's just the best ladder for me to climb up!
Post-production:
Bo Yusen: My A Yuan is a sweet and soft little cake, I want to pamper her, kiss her, and stick to her every day.
Si Yuan: Help! How did the once aloof beauty turn into a clingy, sexy teddy bear?!