During the month, contributed to the ant-design/x repository by addressing a persistent bug affecting Mermaid diagram rendering within the x-markdown package. The work focused on implementing origin container management, which resolved a recurring Mermaid plugin error and stabilized diagram rendering across documentation and examples. Using JavaScript and TypeScript, applied front end development skills to introduce a targeted fix that improved reliability and reduced user-reported issues. The solution included validating the fix across multiple Mermaid scenarios to prevent regressions and enhancing documentation for maintainability. This approach demonstrated careful debugging, risk assessment, and attention to code hygiene in a complex rendering context.