悬案 xuán'àn unresolved case Definitions Defs Origin Strokes Stroke Words Sentences Sents Showing: unresolved question All meanings 3 xuán'àn 3 unresolved case 2unresolved question 1 1 sentence for 悬案 (xuán'àn — unresolved question) 关于他离职的真正原因,至今仍是个悬案。 guānyú tā lízhí de zhēnzhèng yuányīn, zhìjīn réng shì gè xuán'àn. The real reason for his resignation remains a mystery. Source: Dong Chinese Dictionary