The interior-interior is covered with paper or gauze to preserve privacy while the interior-exterior is not. In this former case, carvings are usually not very deep and the lower portion of the window is left uncarved because it would come into frequent contact with children.
如果是室內對室外，通常不糊紙或紗，以便通風採光；如果是室內對室內，通常有隔間的效果，且為保持房間內的隱密性，多半糊紙或夾紗．腰板一般不雕空；裙板由於位置低，孩童經常接觸，通常不施雕，或只做淺浮雕。