章 494: Chapter 454: Put a Bell on the Cat's Neck

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"How many unsolved explosive cases do we have in Qinghe City?"

Jiang Yuan looked at the dossier photos on the desk and suddenly asked.

Perhaps it was because the provincial department had sent staff to supervise the investigation, the Qu'an Train Station explosion case left behind many photos, and the dossier was well-organized and detailed; however, the clues for solving the case were meager.

Jiang Yuan had gone through them from beginning to end and didn't manage to filter out any useful information, so his first thought was to use his merit award to obtain an explosive-related skill.

Since it was an exchange, naturally he hoped that the skill he would get could be more broadly applicable, prompting his question.

The conference room was filled with the police officers from Jiang Yuan's Cold Case Squad, each performing their duties and searching for clues.

Wang Chuanxing and Tang Jia, who also served as Jiang Yuan's assistants, started to look it up upon hearing this.