After My Best Friend Was Buried, I Saw Her Last Three Seconds

I am an undertaker at a funeral home and I can see the last three seconds of the deceased's death. On the day my best friend Song Shi was buried, I saw the murderer pushing the needle into the side of her neck, and her fiancé Wen Heng's face lit up on the phone screen. The police said Wen Heng had a perfect alibi. Everyone said that Shishi committed suicide. I don't believe it. I read her corpse again and again, peeling off her left hand, buttons, a fake car, and a cell phone with a changed password, and crucified Wen Heng step by step. It wasn't until the night before cremation that I read the corpse for the fourth time and finally saw clearly: the hand pushing the needle was wearing her wedding ring. The last sentence she left to me was--if you read me four times, you should forget four paragraphs. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.