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Korea China Japan Exchange Began Since Category
Seoul Special City Beijing City Tokyo Metropolis 1995 sister cities
Gyeonggi Province Liaoning Province Kanagawa Prefecture 1996 sister/friendship cities
South Gyeongsang Province Shandong Province Yamaguchi Prefecture 1997 sister cities
South Jeolla Province Yangzhou City Karatsu City 1999 friendship/sister cities
North Jeolla Province Jiangsu Province Ishikawa Prefecture 2003 sister/friendship cities
Gangwon Province Jilin Province Tottori Prefecture 2008 sister cities
Incheon Metropolitan City Dalian City Kitakyushu City 2010 friendship/sister cities
Gunpo City Linyi City Atsugi City 2010 sister cities
Jeonju City Suzhou City Kanazawa City 2010 sister cities
Gwangju Metropolitan City Quanzhou City Yokohama City 2014 Culture City of East Asia
Cheongju City Qingdao City Niigata City 2015 Culture City of East Asia
Jeju Special Self-Governing Province Ningbo City Nara City 2016 Culture City of East Asia
Jungnang District, Seoul Special City Dongcheng District, Beijing City Meguro Ward, Tokyo Metropolis 2017 friendship/sister cities
Daegu Metropolitan City Changsha City Kyoto City 2017 Culture City of East Asia
Busan Metropolitan City Shanghai City Nagasaki Prefecture 2018 sister/friendship cities
Busan Metropolitan City Harbin City Kanazawa City 2018 Culture City of East Asia
Changnyeong Country, South Gyeongsang Province Hanzhong City Sado City 2019 friendship cities
North Gyeongsang Province Shaanxi Province Ehime Prefecture 2019 sister cities
Incheon Metropolitan City Xi'an City Toshima Ward, Tokyo Metropolis 2019 Culture City of East Asia
Suncheon City Yangzhou City Kitakyushu City 2020 Culture City of East Asia
Suncheon City Shaoxing City & Dunhuang City Kitakyushu City 2021 Culture City of East Asia
Gyeongju City Jinan City & Wenzhou City Oita Prefecture 2022 Culture City of East Asia