On our way from Ulaanbaatar to Beijing we witnessed one of the strangest things we have ever seen! Apparently the Chinese railroads are a different size to those in Russia and Mongolia so believe it or not, all the wheels on our train had to be changed! This process seems to be known as 'the changing of the bogies'! This was done by lifting all of the carriages about 6 feet in the air using hydrolic equipment not too dissimilar to what you would find in a car gar...