The flat vector background features hot air balloons, gifts, and shopping carts floating in the sky above an open market stall on white paper with colored lines. The flat illustration style emphasizes clean shapes and minimalism. It is simple yet visually appealing for advertising design.

A poster for the 'musesai' product, featuring two water droplets flowing in an S-shaped curve, with three spheres on each side of them, and glass tubes connecting these spheres to form the shape of small bubbles, all set against a light blue background. The entire composition is designed as a high-end cosmetic product advertisement, showcasing a clean and minimalist style.