During August and September 2025, Xixi Chen focused on enhancing code clarity and documentation quality across projects such as okx/op-geth, helm/helm, and filecoin-project/lotus. Chen improved maintainability by refining comments, correcting typographical errors, and clarifying function names and return values, particularly in Go and Python codebases. In helm/helm, Chen renamed a core function to better reflect its Kubernetes server-side application role, while in XRPLF/rippled, documentation updates reduced ambiguity for future contributors. These targeted improvements, including code refactoring and documentation updates, lowered onboarding time and reduced misinterpretation risk, establishing a stronger foundation for ongoing backend development and team collaboration.