攻坚 gōngjiān to storm fortifications Origin Definitions Defs Strokes Stroke Words Sentences Sents 攻坚战 gōngjiānzhàn storming of a fortified position A military battle or offensive launched against heavily fortified enemy positions or strongholds攻坚克难 gōngjiānkènán to tackle tough problems to face a difficult challenge head-on and overcome its obstacles