An intricate web spun by a spider, with delicate threads connecting various points, symbolizing the subtle clues and traces that can help uncover the truth behind a mystery. The setting is dark and mysterious, highlighting the fine details of the spider web as it glistens in the dim light. The overall tone is suspenseful, emphasizing the hidden nature of the '蛛丝马跡' and the importance of carefully following each thread to solve the puzzle.
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