wàng fēng pū yǐng
◎知道的并不确实，而据以作无把握、无定向的寻求。同“捕风捉影”
英文chase the wind and clutch at shadows—make groundless accusations; be taken in by rumours; on a false wrong scent;
◎所知不详确，而作无把握、无定向的寻求。
例如如：“望风扑影的那里找得著？”