北齐刘昼所著《刘子》中有一句被古代政治家和思想家反复引用的名言:“尺蚓穿堤,能漂一邑;寸烟泄突,致灰千里。”意思是,一只尺把长的蚯蚓所钻出的小洞,足以使大堤溃决,淹没整个郡县;从破漏的烟囱里泄出的寸许长的火苗,足以使千里村野化为灰烬。这句警句虽然不符合我们长期信守的“九个指头和一个指头”、“主流和支流”理论,但却是世所公认、千古不易的真理。你看,尺蚓之洞,在百丈长堤中,不仅占不到“一个指头”即十分之一的比例,甚至连千分之一、万分之一都不到,但它却能 Liu Qi in the Northern Qi Dynasty wrote a famous quotation repeatedly quoted by ancient politicians and thinkers as follows: “The earthfeet pierces the embankment and can bleed a town; The small hole drilled by a long earthworm was enough to ruin the embankment and invade the entire county; the flames of flames leaking from the leaky chimney were enough to make millennium village to ashes. Although this epigram does not meet the ”nine fingers and one finger“, ”mainstream and tributary“ theory that we have long kept, it is a universally accepted truth that has never been easy to find. You see, the earthworm hole in the Baizhang Long Beach, not only less than ”one finger" that is one-tenth of the proportion, even the thousandth, one ten thousandth, but it can