Video prompt: Serene 4K UHD video, 8s, 60fps, loopable, medi...

Video prompt: Serene 4K UHD video, 8s, 60fps, loopable, medium shot, vertical composition, elderly Japanese man in linen shirt (empty hands) standing in a small backyard bamboo garden. Background: Tall bamboo stalks swaying in the wind, sunlight filtering through the leaves to form moving light spots, a small bird hopping on a bamboo branch. Dynamic design: No character action, character stands still with hands behind back; background movement (bamboo swaying, light spots shifting, bird hopping) adds life. Lighting: Soft natural daylight, green tones, no text, no watermark. Style: Calm, pastoral aesthetic. --ar 9:16 (Vertical, 1080x1920, YouTube Shorts Standard)