出于 chūyú HSK5 out of Origin Definitions Defs Strokes Stroke Words Sentences Sents chūyú out of 出 chū verb to happen to happen; to occur; to arise (of events or problems)于 於 yú preposition because of Indicates a reason, cause, or purposechūyú to stem from 出 chū verb to happen to happen; to occur; to arise (of events or problems)于 於 yú preposition from Indicates a source, origin, or starting point; equivalent to 从 cóng or 自 zì