原因 yuányīn HSK2 cause Origin Definitions Defs Strokes Stroke Words Sentences Sents yuányīn cause 原 yuán noun origin (bound form) origin; source; beginning因 yīn noun reason cause; reason; a factor or condition that produces a result, often contrasted with 果 guǒyuányīn be due to 原 yuán noun origin (bound form) origin; source; beginning因 yīn conjunction because because; as; shows the reason for a situation or action