"Cross-referencing the analysis of individuals with previous robbery convictions?"
"The victim's motorcycle and body were thrown into the river at the same time, and there were no bruises on the body. Could one person really manage that?"
After Zhang Yean spoke, both the instructor and Captain Li Jian nodded, clearly intrigued by this line of thought.
Li Jian stood up and said, "Indeed, if this case is established as a robbery-murder, it couldn't have been done by one person."
"The victim was fairly well-built, and with no bruises, it suggests that one person couldn't have done it alone."
He paused, looking around the group, and continued, "The only possibility for the victim not to resist during a robbery is if the assailant had overwhelming strength."
Then Zhang Yean said, "In that case, we could incite them against one another."
"Encourage them to reveal each other, compete for credit, there might be unexpected results."
"It's a good idea!"
