What, I'm Not a Libertine Anymore?

[Imaginary history + no system + slap in the face + solving the case] (There are historical prototypes, mainly the Ming Dynasty) He traveled through time and became a libertine. But the beginning was a bit awkward. The whole family was confiscated and exiled to the border? Fortunately, Zhou Yang has some skills in investigating crimes. … "You think that libertine has learned the lesson?" "You think the Zhou family is so lucky that the prodigal suddenly enlightened and became an all-rounder in both civil and military affairs." "Impossible, impossible. There's no way this libertine could suddenly become so powerful!"