空虚 kōngxū HSK7 emptiness Definitions Defs Origin Strokes Stroke Words Sentences Sents Showing: hollow All meanings 3 kōngxū 3 emptiness 2hollow 1 1 sentence for 空虚 (kōngxū — hollow) 趁着对方后方兵力空虚,他们发动了突袭。 chènzhe duìfāng hòufāng bīnglì kōngxū, tāmen fādòng le tūxí. Taking advantage of the enemy's weak defenses in the rear, they launched a surprise attack. Source: Dong Chinese Dictionary