During November, Yuchan Song focused on stabilizing the canvas drawing interaction for the semicolon213/2024_GuestBook_T1 repository, addressing a critical bug in input handling that affected user experience and data integrity. He improved the initiation and termination flow of drawing actions, ensuring the canvas correctly recognized active and inactive states. By refining mouse event mapping and coordinate calculations, he made certain that drawing only occurred under appropriate conditions. Working primarily with C++, GUI development, and the Windows API, Yuchan delivered targeted fixes through two commits, demonstrating careful debugging and precise documentation to enhance reliability and reduce errors in the drawing workflow.