3D animated video: A cute chibi baby girl (blue bob hair, white-green heart outfit) rides a playful spotted deer on a colorful block path (grass field, bright sky, floating music notes). The deer starts with slow, gentle steps—its hooves tap softly on the blocks (making tiny music-note sparkles drift), and the scene glows brighter with sunlight. It then accelerates into a lively dash (trotting quickly forward along the path): its body blurs with motion to highlight speed, the soft brown fur shimmers dynamically, and faint music-note particles scatter in its wake. As it moves, the deer continuously blows a steady stream of vibrant music-note bubbles (matching the floating notes) that drift upward, wobbling gently with the breeze, before popping softly (releasing tiny melodic-themed glitter). The baby girl holds the deer’s back steadily, outfit fluttering slightly, feet dangling above the blocks, and a bright smile as they dash through the cheerful block-path scene. Animation style: vibrant, whimsical, hyper-dynamic—add motion blur to the deer and floating bubbles; bubbles sync with the dash rhythm. 12-second clip, 4K, 60fps (ultra-smooth, block-path dash with playful, musical interactions).