R cabin is 30% discount for ordinary cabin. The plane is divided into compartments when seating is arranged. The discount of air tickets in different cabins is different, and different prices lead to different services. Airlines that usually book air tickets will also have different cabins.

Domestic aircraft cabins are mainly divided into first class, business class and economy class or coach. Usually, the first class has the highest price, followed by business class and the lowest is economy class.

When the plane arranges seats, it is divided into different cabins. Different cabins correspond to different ticket discounts, and different prices lead to different services. Airlines that usually book air tickets will also have different cabins.