After 24 hours on the train, we arrived in Brest (Брэст) on the Poland-Belarus border (not to be mistaken with Brest in France uh!).
Rails in Russia, Belarus, and Mongolia have different spacing compared to European standards, so we stopped for three hours in Brest to change the bogies.
That was still a good amount of time to stretch our legs, buy some chicken for lunch... and jump, of course!
Behind me is our Amsterdam - Moscow train.