Subject: Cool items related to summer heat relief, including a transparent glass with water droplets, mint leaves, sliced seeded watermelon, pink lotus, lotus leaves, three folding fans. Scene: Lotus leaves floating on water, background is a hazy light blue fresh summer environment with window shadows. Style: Fresh and healing illustration style, flat and soft digital hand-drawn style. Color tone: Overall fresh light blue tone, matched with bright colors of emerald green, watermelon red, and pink. Lighting: Soft bright natural light, with soft light and shadow transitions on the water surface and items, creating a cool summer atmosphere. Composition: Vertical composition, main elements concentrated in the lower-middle part of the frame, simple blank space above, overall balanced and fresh composition, no text. Purpose: For summer solar term promotion, decorative posters for heat relief themes.