Then train stopped opposite another train at around 5 in the evening. Whether this was 5 in the evening by Moscow time, Beijing time, Ulaan Baator time or British summer time is anybody's guess and not particulary relevant to the story.

Our heads were poked out of the window watching the world go by when we noticed an attractive girl looking at us from the opposite train. She smiled, then lifted up her top.

Unsure of what to do in such situations, we nodded appreciatively. She waved and vanished.

"That's the most interesting thing that's happened to me in the last five days" I said, rather forlornly.