Main subject: Cool items related to summer heat relief, including transparent glass cups with water droplets, mint leaves, cut seed-in watermelon, pink lotus flowers, lotus leaves, three folding fans. Scene: Lotus leaves floating on the water surface, with a hazy light blue fresh summer environment with window shadows as the background. Style: Fresh and healing illustration style, flat and soft digital hand-drawn style. Color palette: Overall fresh light blue tone, paired 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 at the top, overall balanced and refreshing composition, no text. Use case: For summer solar term promotion, heat relief-themed decorative posters.