Zhangwei delivered the Sandbox Container Networking feature for the daytonaio/daytona repository, focusing on backend development and configuration management using Go and Docker. The work introduced a new CONTAINER_NETWORK configuration option, allowing sandbox containers to be attached to dedicated networks for improved isolation and security. Zhangwei updated the Docker client integration to support this configurable networking, ensuring minimal disruption to existing workflows while enhancing deployment flexibility. The engineering approach emphasized maintainable, config-driven design and seamless Docker API integration. Over the month, Zhangwei concentrated on feature delivery and workflow stabilization, demonstrating depth in backend systems and container orchestration without major bug fixes.