Chengyu Tang focused on maintaining and improving documentation quality for the eclipse-sumo/sumo repository during January 2025. Addressing a documentation bug, Chengyu corrected a misplaced parenthesis in the speedFactor attribute description within a Markdown file, ensuring the documentation accurately reflected the intended meaning and reduced potential user confusion. The work involved careful attention to detail and adherence to repository standards, with all efforts directed toward clarity and correctness rather than feature development. Utilizing skills in documentation and proficiency with Markdown, Chengyu’s contribution enhanced the reliability of the project’s technical references, supporting both user understanding and ongoing developer trust in the documentation.