Due to historical reasons, the southern part of Jiangsu, which is close to the most developed city in China and the then capital of old China, has been very developed because of political, economic, cultural, ideological, commercial, transportation and other factors, and it is also the location of Suzhou and Hangzhou, the famous state capital in history, or the surrounding areas. However, northern Jiangsu and southern Jiangsu are separated by a river, and the inconvenient land transportation has always been a bottleneck restricting their economic development. Now, several Yangtze River bridges link southern Jiangsu and northern Jiangsu, which has promoted the economic development of northern Jiangsu. It is certain that the gap between north and south will get smaller and smaller.