My late father used to ride K3, and K4 Beijing-Moscow train very often in early nineties, when Russia had visa free travel with China. That's where he made his

My late father used to ride K3, and K4 Beijing-Moscow train very often in early nineties, when Russia had visa free travel with China. That's where he made his first money. The train was called "Bazaar on wheels" back then. Amazingly, kids were usually just waved off at immigration at the time.