Constant and unpredictable changes in a situation or circumstances.
象风云那样变化不定。比喻时局变化迅速，动向难以预料。
南朝·梁·庾信《入彭城馆》诗年代殊之民俗，风云更盛衰。”
The business world is full of fengyun bianhuan, so you must always be adaptable.
Learn the next connected idiom: 风云变幻 (fēng yún biàn huàn) → 焕然一新 (huàn rán yī xīn)
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