寝 ㄑㄧㄣ ˇ qǐn 苫 ㄕㄢ shān 枕 ㄓㄣ ˇ zhěn 块 ㄎㄨㄞ ˋ kuài 寢 ㄑㄧㄣ ˇ qǐn 苫 ㄕㄢ shān 枕 ㄓㄣ ˇ zhěn 塊 ㄎㄨㄞ ˋ kuài bed of straw and pillow of clay (idiom) the correct etiquette for a filial son during the mourning period