Worked on enhancing the TencentCloud/TIMSDK repository by delivering a focused documentation update for the Windows IM SDK initialization process. The contribution centered on refining the Chinese README file, specifically clarifying the callback thread triggering mechanism to provide more accurate technical guidance for developers. Using Markdown and leveraging strong documentation skills, the update aimed to streamline the onboarding experience and reduce potential support requests by improving clarity and localization accuracy. No code changes or bug fixes were included during this period, as the primary emphasis remained on optimizing documentation quality and ensuring that technical instructions were both precise and accessible.