Bin Li developed a Power Mode Switching Sanity Test for the canonical/checkbox repository, expanding the PC-Sanity suite to validate power state transitions in system testing workflows. Using Python and leveraging test automation skills, Bin integrated the new test into the existing configuration, ensuring it runs automatically as part of the sanity checks. This addition improved continuous integration by increasing test coverage for power-mode behavior and enabling earlier detection of regressions before release. The work was delivered as a single, well-documented feature commit, demonstrating a focused approach to traceability and maintainability, and addressed a specific need for robust power state validation.