`1`庆父不死，鲁难未已`2`qìngfù bù sǐ，lǔ nàn wèi yǐ [Qing Fu is done away with,the crisis in the state of Lu will not be over―there will always be trouble until he who stirs it up is removed] 庆父:鲁庄公的弟弟。庆父不死,鲁国的祸乱就平息不了。比喻不除掉罪魁祸首,就不会有安宁 尝与人书曰:“庆父不死,鲁难未已。”――《晋书·李密传》