It's probably about how Xiao Peisi solved the case.
I have watched too many crime dramas recently, and I felt itchy, so I wrote a few words at random. But in fact, I have neither reasoning ability nor good writing skills, and I am still very lacking in both, so I just wrote. I just wrote two words if I had nothing to do. Maybe there is such a thing as updating. Readers, please feel free to do so and don't argue with me who has nothing.