Halfway through the journey, a mother and daughter came up from the berth opposite them. It was clear from the way they were dressed that they came from well-off families. As soon as they got up, they looked at the berth that had been slept in with disgust and muttered, "Tsk, That’s disgusting, could there be bacteria?”

She took the little girl's hand and said, "My dear, please stop here for a while while mom goes to find the conductor to change the bedding."

"It's so ...