Gongyuan worked on enhancing the Switch component across the Tencent/tdesign-react, tdesign-vue-next, and tdesign-vue repositories by introducing a beforeChange API that enables asynchronous validation before state changes. Using JavaScript, TypeScript, and Vue, Gongyuan implemented a pattern that supports both synchronous and asynchronous checks, allowing for API-driven validation and improved user experience by deferring toggles until validation completes. Additionally, Gongyuan addressed a rendering issue in the NotificationPlugin within tdesign-react, ensuring notifications attach to the correct DOM container. The work demonstrated a strong grasp of API design, asynchronous programming, and front-end component development, with careful attention to cross-framework consistency.