Worked on refining high-DPI scaling configuration for the xiaoyifang/goldendict-ng repository, focusing on improving user experience consistency across platforms. The approach involved updating the Qt-based UI initialization logic in C++ to respect the QT_ENABLE_HIGHDPI_SCALING environment variable, only setting it to '1' if it was undefined or empty. This allowed users and system administrators to override the setting as needed, enhancing configurability and reducing DPI-related issues. The work demonstrated skills in environment variable management, system configuration, and cross-platform compatibility, resulting in a more flexible application setup and lowering support overhead related to display scaling concerns.