Jiandao

Jiandao or Chientao, known in Korean as Gando or Kando, is a historical border region along the north bank of the Tumen River in Jilin Province, Northeast China, that has a high population of ethnic Koreans. The word "Jiandao", literally "Middle Island", originally referred to a shoal in Tumen River between today's Chuankou Village, Kaishantun in Longjing, Jilin, China, and Chongsŏng, Onsong County, in North Korea. The island was an important landmark for immigrants from the Korean Peninsula looking to settle across the river. As the number of immigrants increased, the area covered by the name "Jiandao" gradually changed to reflect the areas of Korean settlement. In the early 20th century, an expanding Japanese Empire argued that ethnic Koreans living in this area should be placed under its jurisdiction. As one of its first set of attempts to annex northeast China and conquer other parts of mainland China, Imperial Japanese forces in Korea invaded Jiandao in 1907, but Japan withdrew its forces to Korea in 1909 and, under diplomatic pressure from China, recognized the border along Tumen River that had existed before the invasion. In China, Yanbian is the name used, and Jiandao is not used, due to the latter's association with Japanese colonial occupation. Both North Korea and South Korea recognize the region as a part of the People's Republic of China, but there are some liberal and left-wing nationalist elements in South Korea that endorse the idea that the region should be a part of modern-day Korea. These groups claim what happened in Jiandao between 1907 and 1909 (Japan's invasion and subsequent withdrawal) was an illegal transfer of Korean territory between Japan and China.