Seventy percent of stakeholders misread static frames — they approve the visual, then reject the product once it moves. Bristol Creative Industries documented this gap precisely: static designs communicate appearance, but they cannot communicate behavior. That distinction is not semantic. It is the difference between a stakeholder who signs off on a design and one who understands what they are actually shipping. Dynamic prototyping closes that gap before a single line of code is written. While a solid foundation is crucial, this lecture focuses on the technical aspects of dynamic prototyping, particularly using Smart Animate for interactions in Chinese super-apps. Prototyping is a testing instrument, especially in Chinese app design. Figma's tools allow for defining interactions like swipe navigation and gesture-driven menus, crucial for apps like Meituan. Dynamic prototypes simulate real user flows, revealing navigation failures and layout issues, crucial for apps with complex interactions like Douyin. Smart Animate is where Figma's prototyping becomes genuinely powerful, Gong. The mechanism is specific: Smart Animate detects matching layers between two frames — same name, same type — and automatically interpolates their position, size, opacity, and rotation across the transition. That means a card expanding into a detail view, a bottom sheet sliding up, or a tab indicator sliding left to right all animate fluidly without manual keyframing. For Chinese super-apps like Meituan or Douyin, where pull-to-refresh, swipe navigation, and gesture-driven menus are standard UX patterns, Smart Animate replicates those interactions with precision. The pull-to-refresh interaction in Meituan is a useful case. The mechanism in Figma: a drag trigger on the content frame, linked to an intermediate loading-state frame, then Smart Animate transitions back to the refreshed state. Three frames, two connections, one convincing gesture. Prototypes can also be populated with realistic data — actual product names, real prices, authentic Chinese copy — to test the underlying logic of a layout, not just its shell. Smashing Magazine's 2025 intent prototyping research confirms this: live prototypes populated with real content reveal conditional logic failures that placeholder text never would. Interactive prototypes also streamline the design-to-development handoff; developers read behavior from a working prototype far more accurately than from annotated static screens. This is where it gets important for you, Gong: static frames still have a place. Early-stage exploration, stakeholder alignment on visual direction, and rapid ideation all move faster without interaction overhead. The discipline is knowing when to switch modes. Once the layout is stable and the user flow is agreed upon, that is the moment to prototype. Not before. Prototyping a direction that is still changing wastes the time it was meant to save. Build the interaction layer on top of a settled structure — frames first, components second, interactions third. That sequence is what produces a high-fidelity prototype that actually reflects the product, not a polished distraction from unresolved decisions. The key takeaway, Gong: use Smart Animate to demonstrate realistic user flows to stakeholders, populate prototypes with real content to surface logic failures early, and treat dynamic prototyping as a precision testing tool — not a presentation layer.