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This is a suspense, reasoning, detective theme of the music.
The opening is like a quiet fog in the dark night, and the mysterious atmosphere spreads quietly. The tone of the electronic synthesizer is looming, like a mysterious person peeping in the dark.
As the melody advances, strings and plucking are added gradually, like a detective pulling a cocoon at the scene of a crime. The composition is gradually superimposed, and the tension continues to rise, as if every note is a key clue to solve the mystery, leading you to shuttle through the suspense world to explore the truth hidden behind the darkness.