風(fēng)吹草動（風(fēng)吹草動）　

◎ 風(fēng)吹草動 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。喻指因輕微的動作而發(fā)生影響

萬一有些風(fēng)吹草動,不要我管門起來,趕得出去,就是個死?！抖膛陌阁@奇》