During November 2025, Khoa focused on enhancing localization for the koreader/koreaderhub.io.git repository by delivering a Vietnamese translation update for the KOReader User Guide. Leveraging PO files and Weblate, Khoa established a scalable workflow for ongoing Vietnamese localization, translating 11.3% of the guide’s strings and documenting progress for future quality assurance. The work centered on i18n, localization, and translation, aiming to improve accessibility for Vietnamese-speaking users. While no bugs were addressed during this period, Khoa’s contributions laid the groundwork for broader language support, with clear commit traceability and a structured approach to managing translation updates within the repository.