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What are the black and white buttons on the seat of the bullet train for? Can you lower your seat?
The white button is used to adjust the backrest. If you don't let go after pressing, you can adjust the backrest angle backwards by leaning back.

Black is to adjust the front and rear of the seat. The height of the seat cannot be adjusted.

In China's railway hard-seat carriages, the distribution is generally 3 plus 2, with an aisle in the middle and seats on both sides. A row of three seats,

The other row is a seat for two. There are two plus two seats near the door, and there is a small table between each seat. Most hard-seat cars have curtains on their windows. There is a seat sign between the two windows.

Extended data:

Train window seat number distribution map:

Generally, the second-class seat of the bullet train is a window seat with the tail numbers 1, 6, 5 and 0, while the first-class seat is a window seat with the tail numbers "multiple of 4" and "multiple of 4+1", and 15 does not face the window.

Distribution map of window seats for Z, K and other ordinary trains:

The train car is usually 1 18 seats, and the seat number is 1-40, which is close to the crew lounge. No. 80- 1 18 is at the other end of the carriage; 4 1-79 is in the middle of the car. According to the seating arrangement of ordinary cars, the seats with the tail numbers 4, 5, 9 and 0 are all by the window.