wind does not come from an empty cave without reason; there's no smoke without fire (idiom)
trad. 空穴來風未必無因
Also written 空穴來風未必無因【kòng xué lái fēng wèi bì wú yīn】
wind does not come from an empty cave without reason; there's no smoke without fire (idiom)
trad. 空穴來風未必無因
Also written 空穴來風未必無因【kòng xué lái fēng wèi bì wú yīn】