I recently saw a news article online saying that my country had successfully captured neutrinos, the legendary ghost particles, or to put it bluntly, ghosts. This immediately reminded me of an experience I had more than 20 years ago, an event that science cannot explain. I remember it was 1997, I had just started high school. Back then, students didn't study as intensely as they do now, with extra classes every weekend and during winter and summer vacations. In my school days, even high school didn't have much pressure; it seemed like the school and parents weren't very strict. For example,