1. Abolish Haizhou and place Donghai County
At the beginning of the Republic of China, the prefecture was abolished and the county was established. In the first year (1912), Haizhou was changed to Donghai County, because its land was bordered by the sea in the east, so it used the name of the ancient Donghai County, and still ruled Haizhou City.
2. Donghai County and Guanyun County were divided
On April 11 of that year (1912), Zhuang Yunkuan, the governor of Jiangsu Province, set up a new county in the 11 towns southeast of the Longwei River in Donghai County with the thirteenth order, because the new county was filled with water in the south and Yuntai Mountain in the north, so the first character of the second place was named Guanyun County, Zhibanpu Town.
3. Construction history of Lianyungang urban area
In the 22nd year of the Republic of China (1933), the eastern section of the Longhai Railway was completed, and a railway terminal port was set up in the north of Guanyun County.
In the 24th year of the Republic of China (1935), the capital of Jiangsu Province planned to demarcate from Guanyun County: south of the mouth of the Linhong River, north of the Burning River, east to the east and west of Liandao Island, west to Xinpu and Banpu of the Linhong River, in preparation for the establishment of Lianyun City, named after the port area facing the east-west liandao island and leaning on Yuntai Mountain. Due to the outbreak of the War of Resistance, preparations were interrupted.
After the victory of the War of Resistance Against Japanese Aggression, preparations for the establishment of the city continued. On April 1, 1946, the 35th year of the Republic of China, Zhang Zhenhan, the first mayor of Lianyun City, arrived at the post.
On November 20, the 37th year of the Republic of China (1948), the whole territory of Donghai County was liberated. The Luzhong South Branch Bureau was ordered by Shandong Province to establish the Xinhailian Special Zone in Jinghai Prefecture, Xinpu Er Town and Lianyun City in Donghai County. On November 11, 1949, the new Hailian Special Economic Zone was changed to Xinhailian City.
On January 1, 1953, Xinhailian City was transferred back to Jiangsu Province, and Jiangsu Province abolished the Huaibei Salt Special Zone and assigned the former Salt Special Zone to Xinhailian City.
On October 1, 1961, the new Hailian City was changed to Lianyungang City. In 1962, Lianyungang City was upgraded to a provincial municipality in Jiangsu Province. The present-day urban area of Lianyungang is divided into three districts: Haizhou, Lianyun, and Ganyu (Ganyu County), which belong to the original Haizhou Prefecture and Lianyun District.
4. Relocation of Donghai County
In May 1950, Donghae County was merged with XinhaiLian City to form Xinhai County. In December of the same year, it was separated again, and Donghai County was relocated to Dongshi Pomegranate Tree Village.
In January 1953, Donghai County was returned to Jiangsu Province from Shandong Province, together with Xinhailian City. In October, Donghai County moved to Haizhou City, Xinhailian City. In November 1957, Donghai County was moved from Haizhou City to present-day Niushan Town.
5. Guanyun County and Guannan County are divided
On December 21, 1957, the Jiangsu Provincial People's Committee issued a circular no. 2126 on the establishment of four new counties, which read: "Regarding the case of the establishment of four counties, including Guannan, Tongru, Shazhou, and Huangqiao, with the approval of the State Council, the following notice is hereby made, and I hope to comply with it: I. Establish Guannan County, which has jurisdiction over Guanyun County's Tanggou, Liyu, Lianwu, Haiting, Xiaoduo, Liji, Zhangdian, Chenji, Sanyou, Longwu, Zhangwan, Xinbei, Sankou, Xin'an, Xingmu, Shude, Yongzhi, Suguang, Erwei, Zhuhua and other 20 townships and Lianshui County's Geji, Shuohu, Fuxing, Xihu, Xianglian, Guanzhuang, Bailu, Zhangxi, Yongliu, Qingquan, Huayuan, Xinping 12 townships, a total of 31 townships and 1 town, 296,640 people, the county people's committee in Xin'an Town." In March 1958, Guannan County was officially established.
6. Establish Xiangshui County
In October of the 29th year of the Republic of China (1940), the anti-Japanese democratic regime Lianshui Fu Border District Office (Zhihuangwei Shuangtao) was established in the border areas of Lianshui, Guanyun and Funing counties, which was abolished at the end of December of the same year. In September of the following year, the Lianguanfu Border District Office was rebuilt.
In April of the 31st year of the Republic of China (1942), the Central China Bureau decided to abolish the Lianguan Fu Border District Office and establish Chaonan County, which still governed Huangwei shuangtao. In mid-May, Chaonan County was renamed Binhai County (present-day Xiangshui County).
In November 1949, Binhai County was merged with Fudong County (present-day Binhai County), still called Binhai County, and the organ was located in Dongkan Town, the former county seat of Fudong County.
In May 1960, with the approval of Jiangsu Province, the two communes of Xiangshui and Zhouji in Binhai County were assigned to Guannan County. In October 1964, the above area was transferred back to Binhai County.
On March 9, 1966, the area north of the Zhongshan River and south of the Guanhe River in Binhai County was re-established as Xiangshui County, named after the town where the county office was stationed.