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"Firstly, I'm a good person, and then let me share my discovery.
"During the time we passed through the tunnel, I didn't sleep at all. I didn't hear any footsteps, but during the third hour into the tunnel, I felt some sort of disturbance. It was very slight, but I have sharp hearing and caught it, like some extremely faint noise."
The next one was Luo Luo, who was number six, the last compartment, also next to the compartment of the man who had already died. She continued slowly,
"I think that sound could very likely have been the noise of the deceased falling to the ground as they died. The murderer must have moved very softly, hardly making any noise.
"But what's strange is that the deceased didn't make any sound either. Looking at the deceased's wound, it was a stab from behind, which anyhow couldn't have been instantly fatal to the point of the deceased not being able to make any noise at all."
