Solving the Case: I Got the System and Kept Getting Stronger

[Case Solving + System + Plot] The definition of a perfect crime is that it cannot be detected and cannot be proven. According to Locard's law of material exchange, criminals must leave traces in the process of committing crimes. Zhang Wen obtained the detective system after traveling through time, and continued to become stronger in the process of solving cases. Compete with criminals, solve cold cases, and fight perfect crimes. Stand at the pinnacle of the criminal investigation world and write about Zhang Wen's crime-solving art.