中朝两国素以图们江为界。从十九世纪六七十年代开始,大批朝鲜民众越界进入延吉地区垦荒,清政府通过划地、编甲升科、发易服等政策,逐步取得越垦韩民(1)的管理权,将其加入中国国籍。但由于地方官员执行归化政策的不彻底性,延吉地方存在大量越垦却不认同清政府统治的韩民,使得原本存疑的边界争议无法理清,导致后来间岛问题的出现。 China and the DPRK and the two countries are mainly Tumen River. Since the 1960s and 1970s, a large number of North Koreans crossed the border into the reclamation of land in Yanji. The Qing government gradually obtained the right of management of Han-ming (1) by reclaiming land, It joins Chinese nationality. However, owing to the incompleteness of naturalization policies implemented by local officials, there were a large number of Han-ming people in Yanji prefecture who did not agree with the rule of the Qing government. As a result, disputes that were originally in doubt could not be cleared up, resulting in the later emergence of the issue of “inter-island issue.”