Over a two-month period, this developer contributed to both the apache/brpc and facebookresearch/faiss repositories, focusing on code quality and reliability. In brpc, they improved maintainability by refactoring mvariable.cpp, replacing tabs with spaces to enforce consistent code formatting and streamline future code reviews. Their work aligned with ongoing style enforcement efforts, reducing formatting-related issues. In faiss, they addressed documentation reliability by fixing a broken reference in quantize_lut.cpp and enhanced the accuracy of search statistics in IndexIVFFastScan. Utilizing C++ and skills in debugging, documentation, and performance optimization, their contributions targeted maintainability and correctness rather than large-scale feature development.