杀人不眨眼

shā rén bù zhǎ yǎn

to murder without blinking an eye (idiom)

ruthless; cold-blooded

shā

to kill; to slay; to murder; to attack

rén

person; people

no; not so

zhǎ

to blink

yǎn

eye (CL:隻|只[zhi1],雙|双[shuang1])