黑白分明

1. • lit. black and white clearly contrasted (idiom)
2. • fig. unambiguous black-and-white in sharp contrast to distinguish clearly right from wrong

Character by character

• 黑(hēi)short name for Heilongjiang 黑龙江 hēilóngjiāng
• 白(bái)surname Bai
• 分(fēn)divide
• 明(míng)Ming Dynasty