Affiche à axe central avec sujets encadrants et titre audacieux

[Theme]: ____ [Chinese main title]: ____ [English title]: ____ [Left subject]: ____ [Right subject]: ____ [Central-axis content]: title / figure / plant / negative space / other ____ [Framing method]: arc negative space / spatial perspective / flexible material / two-object counterbalance / other ____ [Main background color]: ____ [Subject material and style]: ____ [Date / Venue]: ____ [Aspect ratio]: 9:16 Generate a "central-axis framed" poster with strong visual impact and the refined air of a high-end cultural exhibition. First establish a clear, stable vertical central axis; then let the [left subject] and [right subject] form visual weight from both sides, pushing the main title, figure, plant, or negative-space area toward the center. The side subjects must be large enough, close to the edges with natural cropping allowed, together carrying the main visual weight. The two sides may differ in contour, size, color, material, and detail, but the overall visual weight must be balanced, avoiding simple duplication and mechanical mirroring. Choose the framing method by theme: circular or arc subjects can frame a central negative space by their contour; spatial subjects such as buildings or screens can form a depth axis through perspective; flexible materials such as fabric or plants can form soft framing through natural curvature; objects, figures, or artifacts can reinforce the central title through side counterbalance. The central axis must be the most important reading area. The Chinese main title uses a bold large type size, and may be vertical, mixed vertical-horizontal, with scale variation, partial occlusion, or slight overlap with the subject, making typography truly part of the composition rather than merely placed at the top. Allow one low-weight visual node on the axis, such as a tiny figure, a flowering branch, a pattern rubbing, a structural line sketch, or a study diagram, to give the center both focus and layering, but do not form a third equal-level subject. Information density can be rich but concentrated in 2–3 areas: central axis core information, side columns, and bottom exhibition details. Create a clear size contrast between the giant title and tiny text, without spreading small text evenly across the whole frame. Use one clear large-area dominant color to build recognizability, such as vermilion, cobalt blue, lemon yellow, grass green, cyan blue, dark brown, or persimmon orange. Keep 3–5 main colors overall, creating contrast through subject material, typography, and minimal accent color. Core principle: not simple "left-right symmetry," but using the visual weight of both sides to shape the center. The sides apply pressure, the axis focuses; structure stays stable, but details may differ. Overall requirements: strong axis, strong subjects, strong color gamut, clear design sense, rich but not chaotic information, sharp edges, clear text, real materials, with the finish of a mature cultural exhibition poster and editorial design.