In this case, you must first check whether the song format you put in the USB flash drive is the playback format of Binzhi Player.

If the format is correct, if possible, find a car that can also play USB flash drives and try it to see if there is a problem with the USB flash drive.

If the above two problems are not a problem, then if your car is a luxury version with two USB interfaces, try both, because it is possible that the host cable is not connected properly.