| 2002 |
- JAN Exchange of letters of intent for establishing friendly relations and economic cooperation
- OCT Visit to Huangshan City by Dong-gu delegation (led by the deputy head), and signing of a friendship exchange agreement
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| 2003 |
- OCT Visit to Huangshan City by the Dong-gu delegation (led by the head), and signing of a friendship exchange agreement Visit to the 8th Anhui International Culture and Tourism Festival
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| 2004 |
- APR Dispatch of Huangshan City official to work at Dong-gu Planning and Audit Office (6 months)
- MAY Invitation of Huangshan City Performance Group for the opening event of Dong-gu Culture and Sports Hall
- JUN Dispatch of Dong-gu official (Jang Jae-cheol, Information and Communication Division) to work at Huangshan City Foreign Affairs Office (1 year)
- JUL Visit to Dong-gu by by Huangshan City delegation (led by the mayor), and exchange of letters of intent for sisterhood city relations
- OCT Visit to the 6th China International Art Festival by Dong-gu delegation
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| 2005 |
- MAR Dispatch of Huangshan City official (Bi Xiaoping of Tourism Development Division) to work at Dong-gu Planning and Audit Office (1 year)
- MAY Visit to Huangshan City by Dong-gu delegation to sign a sister city agreement (May 9)
- MAY Dispatch of Dong-gu official (Lee Yun-gyeong of Sincheon 1 & 2-dong) to work at Huangshan City Foreign Affairs Office (1 year)
- JUN Visit to Huangshan City for youth homestay by Dong-gu delegation (12 members)
- AUG Visit to Dong-gu for youth homestay by Huangshan City delegation (13 members)
- NOV Visit to the 9th Anhui International Culture and Tourism Festival
- DEC Visit to Dong-gu by Huangshan City delegation (urban planning)
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| 2006 |
- APR Dispatch of Huangshan City official (Wang Linfeng of Rural Development Division) to work at Dong-gu Planning and Audit Office (1 year)
- MAY Dispatch of Dong-gu official (Kwon O-ik of Welfare Support Division) to work at Huangshan City (1 year)
- JUN Visit to Dong-gu for youth homestay by Huangshan City delegation (10 members)
- AUG Visit to Huangshan City for youth homestay by Dong-gu delegation (10 members)
- NOV Visit to the 10th Anhui International Culture and Tourism Festival (by Garubaengi Troupe)
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| 2007 |
- APR Dispatch of Huangshan City official (Wu Xuefeng of Huangshan City Foreign Affairs Office) to work at Dong-gu Economic Affairs Division (1 year)
- MAY Dispatch of Dong-gu official (Kim Jong-ho of Economic Affairs Division) to Huangshan City Foreign Affairs Office (1 year)
- JUL Visit to Huangshan City for youth homestay by Dong-gu delegation (10 members)
- AUG Visit to Dong-gu for youth homestay by Huangshan City delegation (10 members)
- NOV Visit to the 11th Anhui International Culture and Tourism Festival
- DEC Visit to Dong-gu by Huangshan City delegation
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| 2008 |
- APR Dispatch of Huangshan City official (Bi Jian'an of Xiuning County Foreign Affairs Office) to work at Dong-gu Economic Affairs Division (6 months)
- JUN Dispatch of Dong-gu official to work at Huangshan City Foreign Affairs Office (1 year)
- JUL Visit to Dong-gu for youth homestay by Huangshan City delegation (9 members)
- AUG Visit to Huangshan City for youth homestay by Dong-gu delegation (9 members)
- OCT Dispatch of Huangshan City official (Yu Jingping of Public Security Bureau Traffic Support Detachment) to work at Dong-gu Office (3 months; 2H)
- NOV Visit to the 12th Anhui International Culture and Tourism Festival
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| 2009 |
- APR Dispatch of Huangshan City official (Wu Haiyan of Tunxi District Organization Division) to work at Dong-gu Economic Affairs Division (1 year)
- MAY Dispatch of Dong-gu official (Kim Yun-hui of Dong-gu Planning and Audit Office) to work at Huangshan City (1 year)
- JUN Visit to the 13th Anhui International Culture and Tourism Festival (5 members)
- JUN Visit to Huangshan City for youth homestay by Dong-gu delegation (11 members)
- 08월 Visit to Dong-gu for youth homestay by Huangshan City delegation (12 members)
- NOV Visit to Dong-gu by Huangshan University delegation (5 members)
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| 2010 |
- APR Dispatch of Huangshan City official (Long Xiaoling of Yixian County Communist Youth League Committee) to work at Dong-gu Economic Affairs Division (1 year)
- MAY Dispatch of Dong-gu official (Kwon A-yeong of Bullo/Bongmu-dong) to work at Huangshan City Foreign Affairs Office (1 year)
- JUN Visit to Dong-gu for youth homestay by Huangshan City delegation (12 members)
- AUG Visit to Huangshan City for youth homestay by Dong-gu delegation (12 members)
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| 2011 |
- APR Dispatch of Huangshan City official (Ling Weiran of Finance Bureau) to work at Dong-gu Economic Affairs Division (1 year)
- MAY Dispatch of Dong-gu official (Choi Yeong-tae of Dong-gu Urban Design Division) to work at Huangshan City
- JUN Visit to Huangshan City for youth homestay by Dong-gu delegation (11 members)
- AUG Visit to Dong-gu for youth homestay by Huangshan City delegation (12 members), and tourism promotion commemorating the Incheon-Huangshan direct route opening ceremony (led by vice mayor and 6 others)
- SEP Visit to the 15th Anhui International Culture and Tourism Festival (by the district head, chairman, and 8 others)
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| 2012 |
- APR Dispatch of Huangshan City official (Zhou Yang of Supervision Bureau) to work at Dong-gu Economic Affairs Division (1 year)
- MAY Dispatch of Dong-gu official (Nam Sang-mi of Dongchon-dong) to work at Huangshan City (10 months)
- NOV Visit to the 16th Anhui International Culture and Tourism Festival, and the 5th World Traditional Martial Arts Championship (by the deputy district head and 6 others)
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| 2013 |
- MAY Visit to Dong-gu by Huangshan City delegation (by the vice mayor and 4 others)
- NOV Visit to Huangshan City by Dong-gu delegation (by the district head and 30 others)
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| 2014 |
- NOVVisit to Dong-gu by Huangshan City delegation (21 members)
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| 2015 |
- NOV Visit to Dong-gu by Huangshan City delegation (by the vice mayor of trade and 5 others)
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