During their tenure, Wang Deyu focused on enhancing the reliability and correctness of the Go runtime within the golang/go repository. They addressed concurrency issues in plugin loading by ensuring that initialization routines were skipped for plugins that failed to load, reducing error propagation during concurrent operations. Additionally, Wang fixed garbage collection scan size calculations for small pointer arrays, improving the accuracy of memory management. Their work also included stabilizing tests under ASAN by conditionally skipping flaky cases, which improved CI reliability. These contributions demonstrated depth in Go programming, concurrency, and backend development, resulting in more robust and predictable runtime behavior.