闻风丧胆

聞風喪膽
wénfēngsàngdǎn
hear the wind and lose gall (idiom); terror-stricken at the news

CEDICT

to be extremely terrified of a certain person, group or thing

Wiktionary

听到一点消息就吓破胆。形容极度恐惧。

重編國語辭典

Entry Composition

1 闻风 wénfēng to hear news or rumours
2 丧胆 sàngdǎn
  1. panic-stricken
  2. scared out of one's wits