Ansi City

40°46′50″N 122°46′41″E / 40.78056°N 122.77806°E / 40.78056; 122.77806

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Ansi City (Chinese: 安市城; Goguryeo: 安寸忽; Korean: 안시성; Hanja: 安市城), also known as Ansi Fortress,^[1][2] was a Goguryeo fortified city in present-day Liaoning province, China. The city was founded in early 4th century after Goguryeo conquered the area, and received its name from a Han dynasty prefecture of the same name. The ruins of the city are identified with a site at Yingchengzi (营城子), 7.5 kilometres (4.7 mi) to the southeast of Haicheng.^[3][4] Ansi was a major city of the Goguryeo and the scene of a major siege and battle between the Goguryeo and Tang dynasty China in 645 CE.^{[citation needed]}