To uninstall Microsoft Pinyin input method, you can follow these steps:
1. Press the Windows key + I to open the Settings app.
2. Go to "Apps" or "Apps & features" section.
3. Scroll down and find "Microsoft Pinyin" in the list of installed apps.
4. Click on "Microsoft Pinyin" and then select "Uninstall".
5. Follow the on-screen instructions to complete the uninstallation process.
This should remove the Microsoft Pinyin input method from your system.