The code rules are different. The icon displayed is also the simplest "lollipop" by default, and it cannot display complicated ones. Custom icon. By default, labels do not display names, but only by pointing to them. Click the tab, and then click Settings. Change the non-display name to the display name, and then click Save. The second time you point to the label, you will not be prompted for a name, but will display the name directly next to the label. This method is only suitable for modifying labels one by one, not for modifying all labels.