Download the third-party input method and click Line Feed.

2.

Apple's own input method can click on the microphone icon on the left side of the space and say line feed to the mobile phone.

3.

You can also enter text and long press the dialog box, and then click Line Break to break the line.

4.

Enter the information application and select Edit New Information. A short message editing box will open. You can copy all the edited content in WeChat here, or you can enter it directly here, and then you can choose line-breaking typesetting, and then copy it to WeChat and send it after typesetting.