Yao Zengzeng contributed targeted reliability and governance improvements across key open source projects during the month. In the istio/istio repository, Yao addressed policy-matching failures by refining the EnvoyFilter policy matcher to require a root namespace, ensuring correct policy application in root-namespace deployments. This work included comprehensive unit tests and detailed release notes, with additional enhancements to CI and linting processes. In the cncf/foundation repository, Yao updated the Kmesh maintainer list to clarify project ownership and streamline onboarding. Throughout these efforts, Yao applied Go, backend development, and collaborative project management skills to deliver robust, well-documented engineering solutions.