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.