wèi hǔ zuò chāng
(idiom) to act as accomplice to the tiger; to help a villain do evil
为
wèi
variant of 為|为[wei4]
虎
hǔ
tiger
作
zuò
to do; to engage in
伥
chāng
(bound form) ghost of sb devoured by a tiger who helps the tiger devour others
