What should I do if the WeChat new message notification is gone?

If the new message notification of WeChat is gone, I don't know there is any new message. How should I turn on this function? If you don't know, just take a look!

Operation tool: "Huawei Glory 9x, WeChat version 8.0.33"

1. Open WeChat, click me and click Settings.

2. Click the new message notification on the settings page.

3. Turn on the switch to the right of receiving message notification and receiving voice and video call invitation reminder.

After this function is turned on, there will be a notification sound when WeChat has new news. Is it very simple ~