Jinghai () was a historic county that existed on the northern bank of the

Yangtze River Delta The Yangtze Delta or Yangtze River Delta (YRD, or simply ) is a triangle-shaped megalopolis generally comprising the Wu Chinese-speaking areas of Shanghai, southern Jiangsu and northern Zhejiang. The area lies in the heart of the Jiangnan reg ...

in what is now the city of

Nantong Nantong (; alternate names: Nan-t'ung, Nantung, Tongzhou, or Tungchow; Qihai dialect: ) is a prefecture-level city in southeastern Jiangsu province of China, province, China. Located on the northern bank of the Yangtze River, near the river mouth. ...

Jiangsu Jiangsu (; ; pinyin: Jiāngsū, alternatively romanized as Kiangsu or Chiangsu) is an eastern coastal province of the People's Republic of China. It is one of the leading provinces in finance, education, technology, and tourism, with its ca ...

, China. In the 5th century CE, the sandbar of Hudouzhou emerged in the

. In the late

Tang dynasty The Tang dynasty (, ; zh, t= ), or Tang Empire, was an imperial dynasty of China that ruled from 618 to 907 AD, with an interregnum between 690 and 705. It was preceded by the Sui dynasty and followed by the Five Dynasties and Ten Kingdom ...

, Hudouzhou became connected to the north bank of the Yangtze River, and was named Jinghai. Jinghai Military Commission was established in the area, which was controlled by a family with the surname Yao for half a century. The economy was based on agriculture and salt production, and a city wall was built around the main settlement. In 958, the

Later Zhou Zhou, known as the Later Zhou (; ) in historiography, was a short-lived Chinese imperial dynasty and the last of the Five Dynasties that controlled most of northern China during the Five Dynasties and Ten Kingdoms period. Founded by Guo Wei ( ...

dynasty established the Tongzhou Prefecture, with Jinghai and

Haimen Haimen (, Qihai dialect: , Shanghai: ) is a district of Nantong, Jiangsu province, with a population of approximately 1 million. It is located at the opposite side of the Yangtze River to Shanghai and is directly north of Chongming Island except ...

as its subordinate counties. Jinghai was expanded as the capital of the prefecture, and eventually became known as Tongzhou. After the

Xinhai Revolution The 1911 Revolution, also known as the Xinhai Revolution or Hsinhai Revolution, ended China's last imperial dynasty, the Manchu-led Qing dynasty, and led to the establishment of the Republic of China. The revolution was the culmination of a ...

in 1911, prefectures were abolished and Tongzhou was renamed as

References

{{reflist Yangtze River Nantong History of Jiangsu