Make “Long Shadow Morning Poster Series for 10 Cities” yours

Around any subject, generate a minimalist flat visual with a strong graphic memory point: the eye first reads an expanse of bright, clean, nearly texture-free high-key color field, while the subject content is broken into many very small real silhouettes, symbols, or partial objects, sparsely scattered across wide negative space and kept at clear distances from one another, making emptiness the protagonist. Each small subject must cast an exaggeratedly elongated dark shadow; the shadows cross the frame in one unified diagonal direction, far longer than the subjects themselves, forming rhythm lines more striking than the subjects. In one area, the shadow of a giant structure may cut in from the edge, revealing only heavy dark shapes and a few regular light slits, creating a scale contrast and an urban sense of pressure. Colors are drawn from the subject's own material, mood, and cultural semantics, preserving the role relationship of a large clear bright base, very few high-contrast dark structures, and tiny thematic color accents; the whole stays vivid, clean, airy, and with clear tonal gradation, avoiding dirty gray, retro yellowing, or muddy mixed color. If informational text appears, it should act as calm visual weight: a group of bold black densely set large characters pressed near one edge creates firm vertical pressure, while a few small characters with fine tracking are distributed in the corners or bottom, restrained and precise like public signage, leaving large empty space. The overall finish should look like a rigorously laid-out commercial art image; the subjects are small but the shadows huge, producing between real objects and abstract color fields a strong sense of sunlight, order, isolation, and redefinition. Elements of each image: city + 2026-07-08 + morning greeting quote + 5 information points in different forms + rich rhythmic compositional variation. One city at a time; each city has different color and composition logic. A total of 10 cities, 10 images, generated in sequence. Note: each image must have a different composition and layout. Ratio 16:9, horizontal.