If it's paid audio, you can't listen to it on the stereo. You have to pay by mobile phone.

In the past, early education was nothing more than buying a speaker or an animation player for children, and then collecting some children's songs online for children to listen to, even if it was completed. It is not easy to give children early education now, just like buying a speaker stereo, but how to give full play to its value really needs some effort.