瞬息万变 (shùn xī wàn biàn) | Meaning: in an instant a myriad changes (idiom); rapid substantial change | Chinese Idiom with Pinyin & Origin

countless changes · constant permutation千变万化qiān biàn wàn huà

changeable situation (idiom)风云变幻fēng yún biàn huàn

to change irregularly · to fluctuate变幻biàn huàn

a long delay means many hitches · a long night is fraught with dreams · there is many a slip between the cup and the lip夜长梦多yè cháng mèng duō

lit. a white cloud transforms into what looks like a gray dog (idiom) · fig. the unpredictable changeability of the world白云苍狗bái yún cāng gǒu

to change unpredictably · unpredictable · erratic · treacherous变幻莫测biàn huàn mò cè

in an instant a myriad changes (idiom); rapid substantial change