During August 2025, Doufuxiaowangzi focused on enhancing the reliability of the PDMS upgrade path within the pingcap/tidb-operator repository. They refactored backend logic in Go to ensure pod name generation consistently used PDMSName, addressing upgrade risks in multi-domain Kubernetes deployments. Their work included adding domain validation to the TransferPrimary method, which prevented cross-domain transfers and reduced potential data routing errors. By ensuring the cluster domain was passed to the fake PDMS client, they improved the accuracy of test simulations. This targeted bug fix demonstrated depth in backend development and system administration, resulting in more robust upgrade workflows for complex environments.