rely on hearsay; trust one’s ears rather than one’s eyes ? 事實證明，～，往往上當。Facts have proved that those who rely on hearsay always let themselves be fooled.
貴耳賤目ɡuì ěr jiàn mù
重視耳聞，輕視眼見。形容輕信傳聞，不信事實。rely on hearsay, trust one’s ears rather than one’s eyes