A stunningly realistic video with a cinematic quality, filmed in a minimalist modern yoga studio under soft ambient lighting. A young woman, dressed in black yoga leggings (black "yoga pants" with sheer mesh panels, resembling elegant black pantyhose), strikes a challenging vertical split—her left leg extended straight up towards the ceiling. On the white ceiling, a smartphone is securely held in place by thin black straps. Her bare foot lightly touches the screen, triggering an interaction. The camera dynamically shifts focus: first a wide-angle shot of her complete yoga pose, then a smooth zoom-in, finally focusing on the smartphone screen. The screen displays @denglubeijing. High-resolution 4K, shallow depth of field, fluid motion, realistic fabric physics, subtle sheen of sweat on the skin, and soft shadows under natural light. Style: Hyperrealistic, healthy aesthetics, and the elegance of an Apple commercial.