During August 2025, this developer focused on improving documentation accuracy for the OI-wiki/OI-wiki repository. They identified and resolved a critical bug in mo-algo.md by correcting an incorrect complexity analysis formula, ensuring that algorithmic complexity is now represented accurately and consistently. Their work involved careful review and editing of Markdown files, with an emphasis on documentation hygiene and precise change logging. By clarifying technical descriptions, they reduced the risk of misinterpretation for learners and supported sustainable onboarding for future contributors. The developer demonstrated strong skills in documentation and Markdown, contributing to the maintainability and clarity of the project’s technical resources.