Thanks, Cheng, the picture looks great.
I could scan some more Ming pictures I have from Osprey books, if you'd like.
As for Chinese source material, on my next trip to Beijing I intend to scour the bookshops for source. I have a great book on Chinese village architecture (different villages among the minority groups).
But as for military... I haven't found a Chinese equivalent of Osprey... in the US and UK, you can find tons of picture books explaining European castles, but this fashion hasn't caught on yet in China...
Chinese kids appear to be more interested in European castles than in Chinese castles... (I've found many of the European castle picture books from the US translated for the Chinese market)
-Tim