Contributed a documentation update to the xiaoyifang/goldendict-ng repository, focusing on aligning the official documentation with recent changes to the UI popup clipboard monitoring icon. The work involved revising the ui_popup.md file using Markdown to accurately reflect the updated toolbar icon and its behavior, referencing the related pull request for traceability. Emphasizing technical writing and documentation skills, the update improved the clarity and accuracy of onboarding materials and maintenance guides. By ensuring the documentation matched the current UI, the contribution supported both new and existing users in understanding interface changes, enhancing the overall usability and maintainability of the project.