In the Eastern Zhou Dynasty, my viscount was sealed and established the "Middle Kingdom of Wu". It was in Suqian City, Jiangsu Province, and later joined the State of Chu. In the summer of 5 12 (the third year of He Lv, the king of Wu), Wu sent envoys to order Guo Xu (now Sixian County, Anhui Province) and Zhong You to hand over Yan Yu and Zhu Yong, sons who led the troops abroad. Relying on the strong support of Chu, the two countries refused to accept it and sent their second son to Chu without authorization. King Zhao and Chu were very proud, and immediately sent officials to greet Er Gongzi grandly, and let Er Gongzi temporarily live in a nursery (now shenqiu county, Henan). Then, he ordered Yan and Sajima to guard the cultivated city, and sealed the city father in the northeast and the lake field in the southeast to the second son, in an attempt to use the second son to harm the State of Wu. This gave the prince an excuse to send troops. In the winter of the same year, the prince of Wu sent Sun Wu and Wu Zixu to attack. Zhong Wu's country was poor and weak, and it soon perished. Zhong Wu was incorporated into the State of Wu. Zhou Yuanwang was occupied by Chu in the fourth year (47 1). In the first 223 years, after Qin destroyed Chu, Zhong Wuguo was changed to a county.

In 483 BC, Fu Cha, the king of Wu, competed with Qi Jin for hegemony, and hundreds of thousands of land and water troops of Wu were stationed in the lake. In the fifth year of the later Han Dynasty (106), Han Xin, Liu Jiao, the king of Chu, Huang Chao, the leader of the peasant uprising army in the late Tang Dynasty, Han Shizhong, Liang Hongyu, Weisheng and Zhang Rong, the famous anti-Jin soldiers in the Southern Song Dynasty, all refused to defend in Malingshan, bravely intercepting the nomadic people invading south. The people of Suqian made great contributions to the Northern Jiangsu War and the Huaihai Campaign in modern times.

Suqian is not only the main road of north-south traffic, but also a good place for literati to express their feelings and chant. For more than 2,000 years, the Yishu River Basin has been called the Confucian forest state. "Suqian County Records" said: "Qin Shihuang plundered Qin people and swallowed six countries all over the world with his majestic posture, and the Xiang family rose up and died in one fell swoop, which was unprecedented in ancient times. Later, I gradually became infected with poetry, books, ceremonies and music. " Since the Song Dynasty, Wen Tianxiang, Mi Fei, Xing Dong, Shi Peng, Li Dongyang, Dong Qichang, Qianlong, Yuan Mei, Liu Yong, Li Guangdi, Pu Songling, etc. Everyone has come here to find a secluded place, stop and linger, leaving behind excellent works. There are two scenes in Maling Mountain: Siwu Xiaoqing and Longquan Night Rain. There are many places of interest on the mountain, including Sanxian Cave, Qizhen Cave, Siwugang, Qianlong Palace and Xiang Liang's Tomb.