Main subject: Hand-drawn simple line art group portrait of people, filled with yellow and white as main colors, a gathered party crowd (with gestures like raising glasses, playing guitar, singing, holding food), Labor Day-themed visual styling. Scene: People gathered closely together forming a warm gathering scene, vivid and relaxed postures, lively and healing atmosphere, presenting a comfortable scene of leisure gathering and enjoying life during Labor Day. Style: Casual hand-painted illustration style, simple and free lines, fresh and soft texture, rich breath of daily life. Color tone: Taking warm yellow and pure white as the main keynote, clean and soft color matching, gentle and healing vision. Lighting and shadow: Flat hand-painted texture, no complex light and shadow, even and warm color tone, overall fresh and pleasing. Composition: Group portrait of people centered and gathered, full and relaxed layout of the picture, casual and natural lines, full of atmosphere. Use case: Labor Day promotional poster, community festival activity visuals, small restaurant anniversary celebration atmosphere poster, festival daily life hand-drawn materials.