The Chinese presence existed for 400 years. As its administrative center in Lelang, the Chinese built what was inessence a Chinese city where the governor, officials, and merchants, and Chinese colonists lived. Their administration had considerable impact on the life of the native population and ultimatedly the very fabric of Gojoseon society became eroded.Goguryeo, a later founded, primarily ethnic Korean, kingdom, slowly began conquering the commanderies and eventually absorbed them into its own territory.
^Eckert, Carter J.; el. (1990). Korea, Old and New: A History. p. 14. ISBN0962771309.
^'Ki-Baik Lee', "A New History of Korea", 1984 Harvard University Press, page 24'
^《前漢書》卷二十八〈地理志〉第八：“樂浪郡，武帝元封三年開。莽曰樂鮮。屬幽州。戶六萬二千八百一十二，口四十萬六千七百四十八。有雲鄣。縣二十五：朝鮮；□邯；浿水，水西至增地入海，莽曰樂鮮亭；含資，帶水西至帶方入海；黏蟬；遂成；增地，莽曰增土；帶方；駟望；海冥，莽曰海桓；列口；長岑；屯有；昭明，高部都尉治；鏤方；提奚；渾彌；吞列，分黎山，列水所出，西至黏蟬入海，行八百二十里；東暆；不而，東部都尉治；蠶台；華麗；邪頭昧；前莫；夫租。”Wikisource: the Book of Han, volume 28-2