The largest difference between Chinese castles and western castles was that western castle buildings usually had spires, while Chinese castles were always featured with flank-corner towers with extended lofty and heavy eaves.
Of course, in this age, Chinese castles were built with the same architectural materials and armed defense functions. The whole castle was composed of an exterior wall, barbican, battlements, bartizans, entrenchments, suspension bridges and steam-driven power units.
As I have to prepare for the oral defense of my thesis, sorry to notice you that I cannot update new chapters during Nov.15-Nov.16am, Beijing time. From Nov.16pm. to Dec20, 2017, I will update 1 chapter a day as usual. But, the good news is that I will update 2 chapters a day since Dec20, 2017.