Sora提示词：Vertical 9:16, ultra-HD,

Vertical 9:16, ultra-HD, no flicker.
Knife EXACTLY as reference.
Fast-cut montage, 10s.

Scene structure:
1. Housewife (chef style) picks up knife, confident.
2. Fast slicing of meat on wooden cutting board.
3. Close-up: knife blade precision cuts.
4. Quick pan: hands finishing chopping, knife held high.

Camera:
Handheld smartphone, fast-paced editing.
Consistent sharp focus on blade and hands.
Stable natural lighting.

Style:
TikTok US viral kitchen demo, professional.
No text or subtitles.