How to play music on hotel TV?

Many of our friends who go to the hotel know that the TV in the hotel can listen to songs, so first of all, you should tune the channels in the TV to those channels that can listen to songs, such as the music TV channel of CCTV 3. In addition, you can turn on this TV with some audio equipment. It is also possible to hear songs.

Turn on the screen projection function of the TV, and project the music on the mobile phone to the TV to listen to the music.