Mouiscoding contributed to the koreader/koreaderhub.io.git repository by advancing localization for the KOReader User Guide, focusing on Chinese (Traditional Han) translations using the PO file format and Weblate platform. Their work involved translating and updating 129 out of 1950 strings, representing 6.6% progress, and coordinating ongoing efforts for French, Italian, Portuguese, Spanish, and Tamil. By establishing a repeatable localization workflow, Mouiscoding improved documentation accessibility for Chinese-speaking users and laid the foundation for broader multilingual support. The technical approach emphasized translation management, documentation, and cross-language collaboration, enhancing onboarding and supporting future internationalization within the KOReader project.