How to display logo when Huawei Porsche Mate30 is turned off?

Open Huawei mate30pro phone, find the settings on the phone, and click Open.

When it opens, click Notification Settings in the Settings list. There is a desktop icon corner in the notification settings.

After clicking Open, there is a display mode setting, and now it is digital display. After clicking, you can choose the display mode. Now there are only two choices, one is dot and the other is digital display. If we don't want the corner tip, we can close the button behind the application, or click Close All, so it won't be displayed on the icon in the interface.