Henry Wang contributed targeted maintenance to the envoyproxy/envoy-openssl repository by removing the deprecated lb_zone_number_differs metric, aligning the codebase with Envoy v1.31.0 deprecations. He refactored C++ code, updated RST documentation, and revised test utilities to ensure consistency across the project. This work reduced telemetry noise and improved maintainability, addressing both code and documentation. Henry validated the changes through comprehensive testing and continuous integration, confirming stability and preventing regressions. He also coordinated with upstream maintainers to synchronize the update across related projects. His efforts demonstrated careful attention to code quality, documentation accuracy, and collaborative project stewardship.