Wong Kar-wai’s "Chungking Express" employs colour as a synesthetic narrative tool, visually translating smell, time, and emotion. Moving beyond traditional views of colour as mere atmosphere, this study argues that colour functions as a core narrative and rhetorical system in the film. The analysis examines the visualisation of these three dimensions, concluding with the film’s significant implications for cross-sensory communication, non-linear storytelling, and emotional resonance in visual design.