When Lin Mo wiped away the water stains from the corners of Zhao Yan's eyes with alcohol cotton, the scar on his left wrist suddenly hurt as if it had been burned by fire. She stared at the pale and swollen face in front of her. The strange curve of the other person's mouth reminded her of the way he looked when he was just fished out of the shore - the medical examiner said it was the "wry smile" of a drowned person, but Lin Mo felt that it was more like the struggle of someone covering his mouth before death. At midnight, the clock in the morgue stopped on time. When Lin Mo was packing his tools, he caught Zhao Yan's eyes moving from the corner of his eye. She turned around suddenly, and saw the body still lying there quietly, the moon necklace around her neck glowing coldly under the emergency lights.