I Got a Death Text, and the Criminal Begged Me to Be a Decent Person

(Promise me you'll read this when it's late at night and all is quiet, okay?) When she wakes up... She discovers she's been made the victim in a locked-room suicide case. “Is someone trying to kill me?” That's Lin Lin's first thought. Who could the killer be? She watches the ice beneath her feet slowly melt... Feels the noose around her neck tighten little by little... The feeling of suffocation gradually overwhelms Lin Lin's consciousness... She can't breathe... A strange private message... Is it a death notice? Or a warning from the future? Does the huge insurance policy mentioned in the message really exist? And why is his mysterious profile picture a photo of her and her father?