shā jī xià hóu
see 殺雞儆猴|杀鸡儆猴[sha1 ji1 jing3 hou2]
杀
shā
to kill; to slay; to murder; to attack
鸡
jī
variant of 雞|鸡[ji1]
吓
xià
to frighten
猴
hóu
monkey