You're just a locksmith! What are you doing catching swindlers at the start?

Lin Zhou transmigrated and was bound to a system. He started with master-level lock-picking skills and then gracefully went invisible. He then participated in a professional skills competition: one hundred contestants, each earning money through their skills, with the one earning the most after thirty days winning. His first job: he opened a C-grade lock in three seconds, directly exposing a 4P scene to the female homeowner. The police were called, statements were taken, and the number of viewers in his live stream skyrocketed from dozens to four figures. His second job: a woman with a voice that could draw silk called him to a foot massage parlor. A hidden door, a safe, a room full of red bills, and a leg that had been dangling in front of him for a full ten minutes. He was just dawdling, pretending the lock was difficult to open—when the police broke down the door, raiding a brothel. The officer in charge looked at Lin Zhou, and Lin Zhou looked at the officer. The air was silent for half a second. Lin Zhou blurted out, "Officer, you're here for a massage too?" The officer: "...It's you again?" From then on, a legend circulated in the city: there was a lock-picker, skilled in three seconds, who, wherever he went, led to a brothel raid. If a gambling den or drug lord hires him to fix locks, they're raided the next day. If an underground casino asks him to open a safe, they're all busted that night. Even a seemingly respectable teahouse, after he visits, leads the police to uncover a pyramid scheme headquarters. While other contestants are investing in stocks, real estate, and restaurants, Lin Zhou is helping the police boost their performance targets. There's even a saying circulating within the police force: if there's a big case with no leads, just have a locksmith look around the neighborhood.