During March 2026, Wen Yang contributed to the microsoft/hcsshim repository by implementing CPU affinity support for Windows JobObjects, enhancing resource isolation for Windows containers. Using Go and leveraging backend development and container orchestration skills, Wen introduced logic to wire CPU affinity controls directly to JobObject limits, enabling precise CPU resource allocation. The implementation included validation mechanisms to ensure CPU affinity settings adhered to Windows platform constraints, addressing the need for enforceable and predictable resource boundaries. This work improved multi-tenant container performance by allowing more granular control over CPU usage, reflecting a focused and technically sound approach to backend systems engineering.