traces of all things

Modern criminal investigation, scientific case-solving, pseudo-basic reasoning, the protagonist trace inspection engineer, while catching bad guys, falling in love while looking for his younger brother, with his own mosaic, what is the reason for his death today?Blood loss, suffocation, or poisoning?Where did he die?Wilderness, downtown, or indoors?Who is the murderer?Enemy, lover, or passerby?What kind of motivation?Possession, jealousy, or accident?The footprints on the ground, the dust on the window sill, the imprint of the car tires, the direction of the blood drop, you can clearly see the details and restore the crime scene with a pair of sharp eyes.The bones at the bottom of the lake, the cold muzzle of the gun, the bloody knife, the dark deep well, the battle of wits and courage, a loyal heart only wishes for peace in the world. ——Anyone who walks will leave traces. Disclaimer: 1. Relevant criminal investigation technical knowledge comes from references, news reports, and various documentaries. All professional friends are welcome to correct me. Thank you very much. The place, person, time, etc. of the case are purely fictitious. Please do not use them as a reference for behavior. Let us be good citizens who abide by the law. 2. Main references for trace inspection knowledge: [3] Han Junliang. Trace inspection [M]. Beijing: Law Press, 4. Content tags: suspenseful reasoning under strong years┃ Search keywords: Protagonist: Lu Zheng┃ Supporting roles: all kinds of friends, all kinds of murderers, all kinds of villains, all kinds of victims