September 2025 monthly summary for LuisaGroup/LuisaCompute focused on code quality and maintainability improvements to support safer future refactors and faster onboarding. Key deliverable this month was a code clarity improvement in ByteBufferExprProxy, with an argument rename from 'index' to 'byte_offset' in resource.h. This change preserves runtime behavior while clarifying semantics and reducing potential confusion in future maintenance. Overall impact: Improved code readability and maintainability in a critical area of the memory-buffer handling, enabling quicker future enhancements and easier code reviews. No functional changes were introduced. Impact on business value: Safer, clearer code reduces risk of regressions during future changes, shortens onboarding time for new engineers, and supports more reliable performance tuning inLuisaCompute when dealing with byte offsets. Technologies/skills demonstrated: C/C++ header-level refactoring, semantic naming, source control discipline (single-commit change with clear intent), and attention to maintainability in a performance-oriented codebase.