1. Hold down the blank space of the main page of the desktop with one finger, and release the finger when the page enters edit mode. 2. Click the Add Plug-in icon at the bottom of the screen. 3. Click the corresponding clock plug-in in the plug-in list. 4. At this time, the selected clock plug-in will be automatically inserted into the blank space of the desktop, and then click the back button to complete the operation.