Shallow set, located on the (submerged) side of Zhonglian River in ancient times, is called shallow set because of siltation in the river bed and ships are easy to run aground.
In Sanlidun, cultural relics have been unearthed many times, once in the Neolithic Age and once in the Western Han Dynasty. There are 93 cultural relics in the Western Han Dynasty, which are priceless and very rare.
There is a place in China called Jincheng. The Guangxu edition of Andong County Records and Historical Relics records: "Jincheng is three miles north of China. The old record was created by the king of the golden wheel. Golden wheel king, nobody also ". The author once said in the article "The Establishment and Evolution of Lianshui": "In the fourth year of Tang Wude (62 1), Lianzhou was established, three miles north of the county seat, and Jincheng County was set up separately. In the first year of Zhenguan (627), Lianzhou was abolished, Jincheng County was preserved, and Lianshui County belonged to Sizhou. In the fourth year of Tang Wude, Jincheng County was established, and the city was built here. The name of this city is Jincheng. Although Hou Xian County was abolished, the name of Jincheng has been used to this day.