If you look closely, there is no book more visual than Three Trapped Tigers, in that it is filled with blank pages, dark pages, it has stars made of words, the famous magical cube made of numbers, and there is even a page which is a mirror.
Fighting is very physical and extreme and you're very vulnerable. It's a very mental type of thing.
I spent my childhood in an imaginary world - probably because I needed an escape. I think that's one of the reasons people have imaginations - because they can't maintain existence here.