空穴来风未必无因 kòng xué lái fēng wèi bì wú yīn

DEFINITIONS

  1. wind does not come from an empty cave without reason
  2. there's no smoke without fire (idiom)

CHARACTERS

空 kòng
HSK 3
empty, hollow, bare, deserted
穴 xué
HSK 6
cave, den, hole; KangXi radical 116
来 lái
HSK 1
come, coming; return, returning
风 fēng
HSK 3
wind; air; manners, atmosphere
未 wèi
HSK 5
not yet; 8th terrestrial branch
必 bì
HSK 3
surely, most certainly; must
无 wú
HSK 4
negative, no, not; KangXi radical 71
因 yīn
HSK 2
cause, reason; by; because (of)