Reconstruction Scene: I Can See Traces of Erasure

[Criminal investigation + trace reasoning + tracking of old cases + unit cases + master-disciple inheritance] Seven years after leaving the front line, trace inspector Lu Chuan was called back to the scene by a mysterious case on a rainy night. Everyone thought it was just an ordinary accident. But Lu Chuan squatted down and only took a look at the dust marks on the soles, and realized something was wrong. The mud line on the ground was broken, the scratch marks on the window were abnormal, and the impact point did not match the traces on the scene. One overlooked detail reopened the entire case. What made Lu Chuan even more unexpected was that the techniques left at the scene were highly similar to an old case investigated by his master Song Muye seven years ago. The file from that year is missing a page. There is one missing piece of evidence from that year. The truth that he couldn't tell back then appeared in front of him again. From a fall from a building on a rainy night to a mysterious case in a secret room; from the remnants of old cases to a serial layout. Lu Chuan relied on traces to review the scene and used evidence to restore the truth. What others see is the result, what he sees is the process of being hidden. This time, he wanted to personally investigate the case that he had not completed seven years ago.