Jiangsu Province during the Sui, Tang, Song, and Yuan Dynasties

In 581 AD, Emperor Wen of Sui unified China, with the northern part of jiangsu roughly belonging to Xuzhou and the area south of the Huai River roughly belonging to Yangzhou. In 618 AD, the Li Tang Dynasty was established. During the Tang Dynasty, jiangsu was divided into Suzhou, Changzhou, Runzhou (now Zhenjiang City), Yangzhou, Chuzhou (now Huai'an City), Haizhou (now Lianyungang City), and Xuzhou. In the first year of the Zhenguan reign of Emperor Taizong of Tang (627 AD), the country was divided into ten provinces, and today jiangsu belongs to the three provinces of Henan, Huainan, and Jiangnan among the ten provinces in the country. During the Five Dynasties period, Chinese history once again entered a period of division and frequent changes in political power, with jiangsu successively belonging to southern small dynasties such as Wu, Southern Tang, and Wu Yue. After the establishment of the Sui Dynasty, the excavation of the North South Grand Canal brought about the economic takeoff of jiangsu. The vast rural areas have prospered by borrowing water, and many towns have flourished due to rivers. The status of Jiangnan is increasingly elevated. During the Tang to Five Dynasties period, the society in Jiangnan was relatively stable compared to the Central Plains region, and various talents from the Central Plains region were attracted to the south

During the Northern Song Dynasty, jiangsu was divided into Liangzhe Road, Jiangnan East Road, Huainan Road, and Jingdong West Road. During the Southern Song Dynasty, jiangsu was divided into three routes: Liangzhe Road, Jiangnan East Road, and Huainan East Road. The area north of the Huai River was occupied by the Jin Dynasty, who divided Huaibei into two routes: Shandong West Road and Shandong East Road. During the Song Dynasty, jiangsu's economy held a pivotal position in the country. During the Northern Song Dynasty, Huainan and Jiangdong were the regions in China that provided the most financial resources. After the Jingkang Incident, the social conditions for economic development in the Southern Song Dynasty were superior, which led to the overall agricultural economy in the south surpassing that in the north. The north-south distribution of the national population has changed, and the population in the south has begun to exceed that in the north

In 1279, the Southern Song Dynasty was overthrown, and under the Yuan Dynasty regime, jiangsu Province was under the jurisdiction of jiangsu Zhejiang Province south of the Yangtze River and Henan Province north of it. At the beginning of the Yuan Dynasty, due to long-term wars and destructive policies of the rulers, the economy of Jiangnan suffered huge damage. After the mid Yuan Dynasty, there were changes in governance policies, and the southern economy partially recovered in the mid to late Yuan Dynasty