How does Oppor9 set the system prompt tone?

The specific operation of oppo r9 to set the system prompt tone is as follows:

1. Desktop-File Management-All Files-Find System-Enter System;

2. Create a new folder: click System-New Media Folder-New Audio Folder-New Notification Folder;

3. Select your favorite music and copy and paste it into the newly created notification folder;

4. Check the system settings of this machine;

5. View and check in the WeChat settings.