难于登天 nányúdēngtiān harder than climbing to heaven Definitions Defs Origin Strokes Stroke Words Sentences Sents 难于登天 難於登天 nányúdēngtiān harder than climbing to heaven (idiom) extremely difficult; harder than ascending to heaven
难于登天 難於登天 nányúdēngtiān harder than climbing to heaven (idiom) extremely difficult; harder than ascending to heaven
