During the autopsy process, Shen Ting could hear the "last voice" of the deceased. Not listening with his ears, but with his hands. When he touches the bones of the deceased, the deceased's last words will ring in his consciousness - not the complete sentence, but the few words that were carved into the bones at the moment of death and spoken with the last effort. Sometimes it's a person, sometimes it's two words, sometimes it's a complete sentence. Each word is carved into the petrous part of the temporal bone by the last vibration of the deceased's vocal cords, and is sealed forever in that hardest bone of the human body.