简约写实风健康中老年男性室外网球场挥拍击球运动场景

minimalist style, light gray and white color scheme, middle-aged man with short gray hair, smiling, holding a racket ready to hit, wearing white short sleeves and purple pants, tennis court fence in the background, clean and simple background, healthy and positive lifestyle, relaxed and cheerful sports scene, natural and soft lighting, balanced composition, fresh colors, detailed