风云变幻 fēngyúnbiànhuàn unpredictable situation Origin Definitions Defs Strokes Stroke Words Sentences Sents 风云 風雲 fēngyún unstable situation a volatile or precarious situation; turmoil or sudden changes in political or social events变幻 變幻 biànhuàn to change irregularly to fluctuate or change in an unpredictable or irregular way