Why is the Xiaomi Karaoke Microphone silent after using the audio connection cable to switch on and off the microphone?

Solution:

The microphone will not be able to play out after connecting the audio cable, you need to connect the microphone at the same time as using the headset. If there is no sound after connecting the microphone and audio cable at the same time, you need to check whether the interface is reversed and whether the separate device such as headphones can be used normally.