Some netizens posted on social platforms to complain about the hygienic issues of the high-speed rail business seats. They left obvious stains after wiping them with wet wipes. In this regard, 12306 customer service staff said,High-speed rail seats will be cleaned regularly. The specific period is stipulated by the train operator. The customer service terminal cannot be queried. It can help register and provide feedback to the train operator to optimize services.

It is reported that high-speed rail seats are divided into three types: second-class seats, first-class seats and business seats. Second-class seats have 5 seats in each row and adopt a 2+3 layout with an aisle in the middle. First-class seats have 4 seats in each row and adopt a 2+2 layout with an aisle in the middle.

The business seats adopt a "2+1" seat arrangement (single seat on the left and double seat on the right, corresponding to seat numbers A, C and F respectively). This layout is derived from the international practice of aircraft seat arrangement.

The business seat can lie flat at 180 degrees and supports fine-tuning of the sitting angle. Each seat is equipped with an independent operation screen, which can adjust the backrest and leg support. The business seat also has a separate toilet, bar, and cloakroom.