闻风而动

闻风而动:

Literally means:

act when hear the wind blows

Actually means:

act without delay upon hearing the news; go into action without delay

闻, hear; 风, sound of wind, figuratively refers to news.

This phrase means taking immediate action upon hearing the news.

It figuratively means being quick to respond and taking immediate actian. Such quick reaction may be positive, and it may also yield undesirable outcomes.

闻，听。风，风声，喻指消息。

闻风而动，一听到一点儿风声就马上采取行动。

形容反应敏捷，行动迅速。反应或行动可能是积极的、好的，也可能消极的、不好的。