Create a vertical 9:16 East Asian Zen minimalist poster with a high-contrast, celebratory look. A small period-costumed figure stands beside a pool, quietly observing a vivid orange-red goldfish lantern. The emotional theme is lightness, festivity, curiosity, and contemplation. Use the lantern as the central visual in the middle of the composition; place the smaller figure slightly below and to one side, surrounded by abundant bright warm-white negative space. Use aqua and jade blue for the water and atmosphere, vivid orange-red only for the lantern and a small reflection, and dark blue-green for the figure silhouette. Keep orange and blue cleanly separated instead of contaminating the whole palette. Soft transparent light, light paper texture, a faint water reflection, crisp edges, and a cheerful luminous finish. The goldfish lantern must be immediately legible and visually dominant; keep the figure small and never let the image become dark. 
