Xinyang developed and integrated Google Cloud Storage Sparse Download Metrics for the GoogleCloudPlatform/gcsfuse repository, focusing on enhancing observability for sparse file downloads. Using Go, Xinyang instrumented the downloadSparseRange function to track bytes downloaded and read operation types, addressing a telemetry gap in GCS read metrics. The implementation included comprehensive test coverage to ensure the reliability of the new metrics, supporting data-driven performance analysis and troubleshooting. By combining backend development skills with cloud storage integration and metrics tracking, Xinyang delivered a targeted solution that enables more precise monitoring and optimization of sparse-download workloads within the gcsfuse project.