黑白
black and white; right and wrong; monochrome
黑白不分
can't tell black from white (idiom); unable to distinguish wrong from right
黑白林鵖
(bird species of China) Jerdon's bush chat (Saxicola jerdoni)
黑白无常
Two deities, one short, one tall, chained together at the ankle, responsible for rewarding the good and punishing the bad
黑百灵
(bird species of China) black lark (Melanocorypha yeltoniensis)