What's the number of g28 quiet car?

Car number three There are G 1, G2, G5, G 15, G2 1, G27, G28, etc. The quiet car is located in the No.3 car, and the logo of "quiet car" is stuck inside and outside the door glass. Taking the car as an example, the video system defaults to mute the car, and the maximum volume of the car broadcast is also set within 40%, so as to minimize the volume of the car.