ˊㄈㄥfēngㄅㄨˋㄑㄧˇㄌㄤˋlàng

  1. 比喻一切事情發生原因所謂無風不起浪如果不是事出有因謠言滿天飛。」

lit. without wind there cannot be waves (idiom)​; there must be a reason, no smoke without fire