Gujiu worked on the kubernetes/kubernetes repository, focusing on stability and developer experience within the Kubernetes ecosystem. During this period, Gujiu addressed a critical runtime issue by fixing a panic that occurred when a CustomResourceDefinition (CRD) status subresource lacked OpenAPIV3Schema fields. The solution involved Go development and API design, ensuring safer CRD handling and reducing operational risk. Additionally, Gujiu introduced a generated-files management file to track and prevent drift in generated artifacts, and updated issue templates to streamline bug reporting and feature requests. This work demonstrated depth in open-source maintenance and improved both triage processes and code reliability.