Wow Alan now this is what I'm talking about! I believe out of your entire China series this shot shines the brightest for several reasons:
I love the contrast between the shadows and the light. It plays throughout the entire image, including from the bottom all the way up to the top. Also the way in which the wall curves makes me imagine myself walking along this lonely and long path to nowhere. Furthermore you captured some lovely light here that is very pleasing on the eye and renders a good tonality range in B/W.