尘饭涂羹 (塵飯塗羹) chén fàn tú gēng

chén fàn tú gēng set phrase dusty rice and dirty broth
Domain: Idiom 成语
Notes: Describes something that has declined and is not worth reviving (Guoyu '塵飯塗羹'; Mathews 1931 '塵羹塗飯', p. 40)