shā jī jǐng hóu
lit. to kill the chicken to warn the monkey (idiom)
fig. to punish an individual as an example to others
杀
shā
to kill; to slay; to murder; to attack
鸡
jī
variant of 雞|鸡[ji1]
儆
jǐng
to warn
猴
hóu
monkey