Well, all the photos including those taken by our Chinese hosts in Beijing are downloaded. So I can now illustrate!
Looking at the photos, I was again reminded at the kindness and courtesy of the people we met, including especially our hosts in Beijing who devoted three sometimes exhausting days to show us as much of the city as possible.
This shot shows part of the Great Wall. If you look down, you can see just how incredibly steep it is.
Part steps, part smooth but still very steep, I tried to imagine what it would be like to run up and down it wearing full military kit! I could not.