The ancient city of Sizhou was flooded.

In the 19th year of Emperor Kangxi of Qing Dynasty (1680), one night in June in Gengshen, Sizhou City was swallowed up by the flood of Huaihe River. After many rescues, the flood is difficult to eradicate. Chengwei is like a piggy bank. In the 25th year of Kangxi (1686), Huanghuai was flooded again, and Sizhou City finally sank to the bottom forever, which has been more than 300 years. Sizhou was founded in the first year of Dacheng in the Northern Zhou Dynasty (AD 579). At that time, the Northern Zhou government built a city along the abandoned Yellow River in Gucheng Village, Zhenglou Township, Siyang County, in order to strengthen the management of water transportation in the north and south of Surabaya (the ancient name of water originated from Yimeng Mountain in Shandong Province and passed through Xuzhou, Suqian and Siyang to Huaihe River), which was called "Sizhou" because of Surabaya. This is the first sizhou city in history and the first sizhou rule.

In the first year of the Great Cause of Sui Dynasty (AD 605), Yang Di opened a collection canal, which was called the border canal or the south canal in history. This river flows into the Yellow River from Xiyuan of Luoyang Emperor Palace to Luokou, from Bambusa to Kaifeng, passing Shangqiu, Lingbi, summer and autumn to Linhuai (now on the other side of Huaihe River in Xuyi County, not in lin huai zhen). With the rise of the Grand Canal, the water transport of Surabaya gradually declined, and Sizhou City was bound to lose its role and prosperous scene in those days and become a depression.

In order to strengthen the management of Tongji Canal and speed up the transshipment of materials, in the 23rd year of Tang Kaiyuan (AD 735), the state capital moved to the east bank of Bianhe River, which is across the river from Linhuai County (built in the Zhenguan period of Tang Dynasty and in 704). Here, you can go upstream along the Huaihe River to state capitals such as Dahaoliang, Yingshou and Xinyang, and downstream along the Huaihe River to Huaiyin and Yang Shan (now Huai 'an), and then reach the Yangtze River through the canal. At this point, Sizhou City, on the coast of Surabaya, ended the history of 156 years, moved south to 190, and started a new course.

In the third year of the Northern Song Dynasty (1006), Jingdezhen moved to Linhuai County to govern Xu Chengyi (now Sihong lin huai zhen), and Sizhou became an important town on both sides of the Bianhe River. Across the river, it faces Xuyi County on the south bank of Huaihe River, 5 miles apart.

According to the Records of Sizhou, Sizhou is at the southernmost tip of the state, facing Xushan, and the city originated in the Song Dynasty. The two old cities, both made of earth, were made of brick and stone in the early Ming Dynasty, and they became one. The circumference is nine miles and thirty paces (about 4245 meters), and the wall was originally two feet high. In the thirty-sixth year of Jiajing (1557), it was besieged by the Japanese army, and then it was raised to 20 feet and 5 feet. According to He Zhi of Sihong, there are five gates in Sizhou, namely Huilong Bridge in the east, Yongning Bridge in the west and Yueyang Tower in the south, which are magnificent. Between the south gate and the west gate, there is a gate called Xianghuamen, and the north gate is called Chaoque Building. All the gates of Sizhou City have water gates, the west gate of Jingangdu and the north gate of bars. In order to prevent floods, there are six months of bright cities and six months of bright doors outside the city. The moon door is like a double door. When there is a flood outside the city, first block the Moon Gate and let pedestrians pass through the Moon City levee. This form of ancient city is rare in China. At the peak, there are 15 streets, 34 lanes, 16 bridges,10 official buildings such as Zhou Ya and DuchaYuan, 8 Confucian schools and various academies, 2 yiguang, 15 post offices and 65,438 bell and drum towers. There are more than 9,000 households and 36,000 people in the urban area. It is a prosperous port city with dense houses, convenient transportation and merchants. The change of sizhou city and the flood in sizhou.