Pausing briefly, Ran Yan continued, "The edges of the secondary wounds showed no sign of the skin curling up, indicating no signs of life, and there was depressed comminuted fracturing. The wounds were clean-cut in a triangular shape, which suggests that these injuries were inflicted after death with a forceful blow from a sharp metal blunt instrument."
Liu Pinrang nodded thoughtfully, "Then how do you determine that there were two perpetrators?"