How to introduce music into Tik Tok?

The steps for Tik Tok to import his own music are as follows:

Let me take the latest version 22.4.0 of Tik Tok as an example.

1. First open Tik Tok and click the "plus sign" in the middle below (as shown below):

2. Click "Add Music" above, and then click the discovery on the right (as shown below):

3. Find "local" in it, first match the mobile phone music, and then click the local song (as shown below):