I guess apartment building in China all use Stucco. It is a very simple construction method, There is no 发霉 problem as long as it is built
properly by skilled workers. That is why not every builder is able to do it, only certain builders. Richcraft, Mito, Aubundele(?), phoenix,
Ashcroft..., only use bricks, partial stone, not stucco. Stone + Stucco looks more 高大上.