I, a Security Guard, Can Solve Major Cases. It's Reasonable.

Han Ling traveled through parallel worlds in order to complete system tasks. Work hard to complete all the major unsolved cases in the city. Refresh the skills granted by the system to the full level in trace detection, criminal psychology, fighting, firearms and other skills. There are no more unsolved cases under my eyes! One year later. Because he couldn't stand the trivial matters in the bureau, he retired early and became a security guard. In a top villa area, the living environment of the owners has been greatly improved since Han Ling took up the job. Han Ling even won the heart of the daughter of the richest man in the Dragon Kingdom. Just when he was about to enjoy the peak of his life. One major case after another comes one after another. After retirement, he seems to feel the passion of his past. He decided to go out. Daughter of the richest man: How can you, a security guard, solve these unsolved cases? New colleague at the police station: Huh? If a security guard serves as a consultant, is the world in chaos? When everyone disagrees. Han Ling used god-level reasoning to silence everyone. I'm a security guard, so it's normal for me to be able to solve crimes... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.