Crow Feather Case

After graduating from Criminal Investigation Archives, he was transferred to a position in archives digitization due to bleeding. Grandpa Lin Zhengguo was a retired detective. He died of illness three months ago, leaving behind a box of undisclosed old case files. The protagonist is accidentally involved in an unsolved case spanning twenty years while sorting out files. He is meticulous, observant, has mild obsessive-compulsive disorder, and is extremely sensitive to details in old files.