Subject: Five cute and adorable young children, all with round cheeks, relaxed and happy expressions, bright smiles, wearing brightly colored summer casual children's clothing, lying on their backs on the grass with their heads facing the center of the画面 (adjust to: lying on their backs on the grass with their heads oriented toward the center of the frame), limbs stretched out and relaxed. Scene: Outdoor natural lawn setting, with small white daisies and small yellow star-shaped decorations scattered on the tender green grass, full of a fresh summer outdoor atmosphere. Style: Healing hand-painted children's illustration style, with soft watercolor texture, Q-version cartoon characters, delicate and round brushstrokes, overall full of childlike and playful atmosphere. Color Tone: Overall fresh and bright tender green as the main tone, paired with soft and bright low-saturation colors such as warm yellow, orange-red, light blue, and off-white from the children's clothing, overall colors are fresh and warm, full of vitality. Lighting: Soft daytime diffused natural light, no strong hard shadows, light evenly and softly covering the grass and children, the overall画面 (adjust to: image) is transparent and bright, with a warm and comfortable atmosphere. Composition: Overhead view composition, five children arranged in a circular layout with their heads facing the center of the frame, characters located in the lower-middle area of the画面 (adjust to: image), overall composition full and balanced, with prominent visual focus. Purpose: Vertical long-image format festival promotional material, adapted for mobile communication, suitable for Children's Day-related promotional scenarios.