When Lu Ji sank
"Shen Shi, someone jumped off the building for you."
In my senior year of high school, I was isolated from the whole school. Only Lu Ji from the next class passed notes to me.
He wrote: "The sweet and sour pork ribs in the cafeteria today are terrible, just like the one you brought me last time."
He wrote: "I signed up for the physics competition for you, and the names are written by both of us."
He wrote: "Don't listen to them, you are not a monster."
Later, he died on my birthday, jumping from the top floor of the teaching building, holding a crumpled paper airplane in his hand.
Ten years later, I became a criminal police officer.
While investigating a serial murder case, I found a paper airplane next to each deceased person.
The folding method is exactly the same as when Lu Ji passed the note.
Concept: Side effects of nightmares