During November 2024, Dandan Bi focused on enhancing the reliability and data integrity of the VarStore/UI subsystem in the acidanthera/audk repository. Working primarily in C and leveraging expertise in firmware engineering and UEFI development, Dandan addressed a critical bug in the HiiDatabase module. The solution involved ensuring that default values for BIT VarStores are consistently copied as UINT32, regardless of bit width, which prevents data corruption for CheckBox, OneOf, and Numeric data types. This targeted fix improved the robustness and maintainability of VarStore handling, reflecting a deep understanding of low-level firmware data management and system stability.