睁一眼闭一眼

zhēng yī yǎn bì yī yǎn

to turn a blind eye

zhēng

to open (one's eyes)

one

yǎn

eye (CL:隻|只[zhi1],雙|双[shuang1])

to close

one

yǎn

eye (CL:隻|只[zhi1],雙|双[shuang1])