艰苦奋斗 (艱苦奮鬥) jiānkǔ fèndòu

jiānkǔ fèndòu set phrase difficult struggle, arduous struggle
Domain: Idiom 成语
Notes: (CC-CEDICT '艱苦奮鬥'; CCI p. 4; Guoyu '艱苦奮')