扭转乾坤

niǔ zhuǎn qián kūn

lit. to upend heaven and earth (idiom)

fig. to change the course of events; to turn things around

扭

niǔ

to turn

转

zhuǎn

to turn

乾

qián

variant of 乾[qian2]

坤

kūn

variant of 坤[kun1]