During November 2024, Yaodong En focused on backend development for the TEN-framework/ten_framework repository, addressing reliability issues in the Bing Search Tool Extension. He identified and resolved a critical bug where HTTP sessions were prematurely closed, which had been causing runtime errors and impacting user experience. By implementing a robust session initialization flow using Python and leveraging asynchronous programming techniques, Yaodong ensured that each request maintained a valid session throughout its lifecycle. His targeted testing validated the fix, resulting in a more stable Bing search functionality. The work demonstrated depth in API integration and careful attention to session management challenges.