近代百年,西方列强先后对中国发动了六次大规模的侵略战争。列强在进行这几次大规模的侵略时,主要从海上进攻,但竟然没有一次是从平坦的苏北平原沿海地区登陆,一个重要的原因是近代苏北沿海地区的地貌条件的限制。而形成近代苏北海岸及其附近陆地和海域复杂地貌的最重要的原因是历史上黄河改道由淮入海的影响。 In the past century, Western powers successively launched six large-scale aggressive wars on China. In the course of these large-scale aggressions, the powers attacked mainly from the sea. However, once and for all, they did not land from the flat coastal areas of the Northern Jiangsu Plain. An important reason is that the geomorphological conditions in the coastal areas of northern Jiangsu were limited. The most important reason for forming the complicated landform of the north Jiangsu coast and its adjacent land and sea in the modern history is that the Yellow River diversion has historically been effected by the Huai River.