During a one-month period, contributed to the KotatsuApp/Kotatsu repository by enhancing localization support for Chinese users. Focused on Android development, the work involved adding a new test string in XML to improve source integration testing for Chinese (Simplified Han script). This update was committed via Weblate, laying the foundation for broader internationalization testing and future language expansions. The approach emphasized translation accuracy and seamless integration within the existing Android framework. While no bugs were fixed during this period, the feature delivered measurable business value by extending localization coverage and preparing the application for additional language support in subsequent development cycles.