it can be done by using the transfer station function of qq mailbox, which is very simple, but the link time limit is short.

Method: upload your local music (it's best to name the music as 1.mp3 before), then enter the file transfer station in your mailbox, choose to download the song, and then you can see the download link of your own song. Finally, remove the characters after ".mp3" from the link, which is the complete spatial link of the music ~

Good luck!