Worked on foundational modernization of the Object Storage Service within the qor5/x repository, focusing on migrating the OSS to AWS SDK v2 and introducing support for multiple cloud storage providers such as Aliyun, Qiniu, and Tencent Cloud. This involved refactoring the OSS interface, unifying provider packages, and updating dependencies to enable scalable, maintainable cross-provider storage. In the qor5/admin repository, upgraded the AWS SDK from v1 to v2 and refactored S3 configurations to align with new library standards. The work emphasized technical debt reduction and future-proofing, utilizing Go, dependency management, and API integration without introducing user-facing features during the period.