黑箱操作 hēi xiāng cāo zuò

DEFINITIONS

  1. see 暗箱操作[an4 xiang1 cao1 zuo4]

CHARACTERS

黑 hēi
HSK 2
black; dark; evil, sinister
箱 xiāng
HSK 3
case, box, chest, trunk
操 cāo
HSK 5
conduct, run, control, manage
作 zuò
HSK 1
make; work; compose, write; act, perform