In fact, the food in the prison is ok, but the price is very expensive for prisoners, which is basically equivalent to the price on the train, and the price for jailers is basically the same as that of the unit canteen. However, people in prison are generally poor and can only eat some basic meals such as boiled cabbage. If the family has a jailer, they can deliver meals. If they are poor, they will boil boiled cabbage and steamed bread every day.