[Genius] + [Crime Solving] + [Mystery] + [Police]
Cambridge master's and doctoral degrees, with an IQ of 180.
He became a police assistant because... “Taking the civil service exam is too much hassle. Police assistants don't have to take it.”
The section chief asks him, “You went to Cambridge. Why become a police assistant?”
“Just trying to make a living.”
The section chief asks again, “How long do you plan to do this?”
“Until I become police chief.”
The section chief thinks there's something wrong with his head.
Three years later, he's a 27-year-old criminal investigation team captain.
His colleagues who started at the same time ask, “Bro, isn't this the wrong script?”
The writing is very good, the description is very detailed, and the reversal is enough.