Yunxue worked on the easyops-cn/next-core repository, delivering a security-focused refactor of the token authentication process. Using Python and leveraging skills in authentication and DevOps, Yunxue introduced a new utility for token retrieval that enforces the use of clientId and secret, thereby strengthening the authentication flow. The refactor included updating the header generation logic to integrate this utility, aligning with internal security requirements and laying the foundation for future token rotation. While no bugs were fixed during this period, the work demonstrated depth in secure scripting practices and improved the auditability of authentication without affecting user-facing APIs.