During the month, contributed two targeted features focused on backend development and documentation within the apache/doris-website and Jibing-Li/incubator-doris repositories. Enhanced the Chinese documentation for Join Hints, refining explanations and ensuring consistency across versions to support developer onboarding and query optimization. In the Nereids framework, implemented new cancel commands for load, export, and warm-up jobs, updating the DorisParser grammar and introducing command classes to improve runtime management. The work leveraged Java, ANTLR, and technical writing skills, emphasizing clear documentation and robust command pattern implementation to address operational needs and improve the overall developer experience without introducing new bugs.