Number nine. K865 express train goes from Tangshan to Linfen. The train consists of 18 carriages, of which 1 is a baggage car, 2-8 carriages are hard seats, 9 carriages are dining cars, 10 is a soft sleeper, and1~17 is a hard sleeper.17. Train 10 ~ 17 is a sleeper, 10 is a soft sleeper,117 is a hard sleeper. So k865 dining car is in car 9.