Xiadejun focused on backend development and security enhancements for the StarRocks/starrocks repository during May 2025. He addressed a security vulnerability by implementing a targeted bug fix in Java that restricts the root user’s visibility of process information when admin protection is enabled. This change prevents sensitive data exposure and aligns with the project’s access-control requirements. Xiadejun validated the solution through code reviews and focused testing to ensure no performance degradation. While the work did not involve new feature development, it demonstrated depth in security-focused bug resolution and reinforced the repository’s commitment to robust access management and backend reliability.