寝苫枕块 (寢苫枕塊) qǐn shān zhěnkuài

qǐn shān zhěnkuài set phrase bed of straw and pillow of clay; the correct etiquette for a filial son during the mourning period
Domain: Idiom 成语 , Subdomain: , Concept:
Notes: (CC-CEDICT '寢苫枕塊')