During November 2024, Jibing-Li enhanced the apache/doris-website repository by refining the Chinese documentation for Join Hints, focusing on clarity and consistency to support developer onboarding and query optimization. In the Jibing-Li/incubator-doris repository, he implemented new operational controls in the Nereids framework, enabling cancellation of long-running load, export, and warm-up jobs. This work involved extending DorisParser grammar and introducing new command classes, applying backend development and command pattern expertise with Java and ANTLR. The contributions addressed practical runtime management needs and improved technical documentation, demonstrating depth in both system design and technical writing within a short project period.