The plastered part are the wooden buildings and fence walls on top of the stone-encased walls, which is, as I’ve mentioned previously, in line with the fact those stones served the same purpose as plaster. Yes, and if you look at those pictures you will very clearly see not even single square centimeter of that Japanese stone wall is plastered. All cultures in the game share the same set of custom fantasy AoE walls with customised bastions and gatehouses of highly dubious historical quality. TL DR: No, they did not give the Rus’ Chinese walls.

Unless lacquered, or it should be naturally black like the rest of the buildings on display (which turn the black into bright blue, giving it that fantasy flair) with a green outline as Ming gatehouses in major cities would have had according to artwork well into the Qing period. So either everything there should have orange-colored tiles (it’s the same sort of orange you find in European rooftiles and these were naturally that color in deep southern China) The towers on Chinese walls are strictly rectangular in shape (not a hexagon like the ones here), they did not feature elaborate decorative pagoda roofs (much less ones with lacquered green tiles, even), Chinese did not use portcullis (falling metal gate), having never developed that kind of opening mechanism and finally the building on top of the gatehouse is possible, but has the tiles made of a different material than all the other buildings in this architecture set. The walls in the game are definitely not based on Chinese walls, that much is readily apparent, even if Khansa fudges putting it into words, even including pictures of recent drawings as evidence.

The long and short of it is that European walls are stone walls and plaster is there to protect those from the elements, while Chinese walls are (almost always) rammed earth walls and the stone (later brickwork) around them is the secondary protective element, just like plaster in Europe. Plaster was used on many buildings (after all, that’s exactly what those giant blocky red buildings like the Forbidden City gates are) but not on city walls themselves.

Crusader no remorse tileset