Developed provider-scoped network policies for multi-network pods in the kubeovn/kube-ovn repository, focusing on enhancing security and policy accuracy for Kubernetes environments. Leveraged Go to implement annotation parsing for provider filtering and updated the policy filtering logic to enforce provider-based scoping. The work included gating Service ClusterIP inclusion to the default VPC, reducing cross-network policy ambiguity and tightening security boundaries for multi-tenant deployments. Comprehensive unit and end-to-end tests were added, with NAD CRD gating considered to ensure robust validation. This feature established a scalable foundation for provider-aware network policy management, demonstrating depth in Kubernetes and network policy management skills.