无征不信 wú zhēng bù xìn

DEFINITIONS

  1. without proof one can't believe it (idiom)

CHARACTERS

无 wú
HSK 4
negative, no, not; KangXi radical 71
征 zhēng
HSK 5
invade, attack, conquer
不 bù
HSK 1
no, not; un-; negative prefix
信 xìn
HSK 3
trust, believe; letter