Coach generally refers to a public transportation method that periodically travels between two county-level (excluding municipal districts) or administrative areas above the county level, has more than 16 seats, and has a relatively stable price. For example, the coach from Shanghai to Shuyang.
Coach often run at high speeds, with small toilets on them, and the fare is generally higher than that of trains. There is no market in the north, because the trains are developed, and the coach is more developed in the south.