ultra realistic vertical zen forest scene at soft daylight turning slightly dim, middle-aged white-haired monk in deep red robes sitting near a flowing forest stream playing a bamboo flute, calm and slightly melancholic atmosphere, dense trees surrounding, soft light rays through leaves, gentle water movement, peaceful but emotional mood, cinematic lighting, shallow depth of field, clear subject focus, monk visible, immersive ambience, highly detailed nature textures, photorealistic, vertical composition