白纸黑字 bái zhǐ hēi zì

DEFINITIONS

  1. (written) in black and white

CHARACTERS

白 bái
HSK 2
white; pure, unblemished; bright
纸 zhǐ
HSK 2
paper
黑 hēi
HSK 2
black; dark; evil, sinister
字 zì
HSK 1
letter, character, word