How to change the ringtone of WeChat video call?

How to change the ringtone of WeChat video call;

Tools/materials: vivo Y52S, Funtouch OS 10.2, WeChat 8.0.5.

1. Open the mobile phone WeChat. On my page, click "Settings".

2. On the settings page, click "New Information Notification".

3. On the "New Message Notification" page, click "Call Ring".

4. On the ringtone page, click "Replace".

5. On the ringtone selection page, click ringtone.

6. On the ringtone page, click "Set as ringtone".

7. Click "Settings" on the "Set as ringtone" page to replace the new WeChat video ringtone.