空穴來風 (hung1 jyut6 loi4 fung1) — an empty hole invites the wind in Cantonese
hungˉ¹空jyutˍ₆穴loiˎ₄來fungˉ¹風简 空穴来风
Mandarin Pinyin: kong1 xue2 lai2 feng1
Meaning of 空穴來風
nounan empty hole invites the wind
noununconfirmed rumour; rumour without proof; groundless rumour
nounweakness lends wings to rumours; there's no smoke without fire