風(fēng)吹草動(dòng)（風(fēng)吹草動(dòng)）　

◎ 風(fēng)吹草動(dòng) fēngchuī-cǎodòng

[the slightest sign of disturbance;at the mere rustle of leaves in the wind;be sensitive to the slightest upset as the grass bends whenever the wind blows] 有風(fēng)吹,草就動(dòng)。喻指因輕微的動(dòng)作而發(fā)生影響

萬(wàn)一有些風(fēng)吹草動(dòng),不要我管門起來(lái),趕得出去,就是個(gè)死。——《二刻拍案驚奇》