During January 2026, Yuanpeng contributed to the element-plus/element-plus repository by addressing a UI consistency issue in the Date Picker component. He fixed a bug where disabled buttons did not correctly reflect the unlink-panels state, updating both the date-picker and date-picker-panel templates to ensure proper application of the is-disabled class. Yuanpeng reinforced these changes by writing and updating component tests to validate the disabled-state behavior, focusing on improving accessibility and preventing user confusion in date selection flows. His work demonstrated proficiency in Vue.js, JavaScript, and TypeScript, with a focus on front end development and robust component testing practices.