During December 2024, Buwei Cui focused on enhancing the maintainability of the EspressoSystems/espresso-sequencer codebase by improving code readability and documentation. He refactored Rust source files and markdown documentation, standardizing inline comments and removing redundancies to create clearer, more concise explanations throughout the project. This work did not introduce new user-facing features or alter existing functionality, but instead targeted long-term code quality and easier onboarding for future contributors. By applying skills in code refactoring and documentation improvement, Buwei facilitated faster code reviews and established consistent commenting standards, ultimately supporting a more maintainable and accessible codebase for the team.