서울특별시장
Yi Seok founded an organization "Korean Imperial Family Cultural Foundation" () in August 2006 to support this proposal. Yi Seok's guesthouse, as well as his residence, () in Jeonju Hanok Village, was once visited by former president Roh Moo-hyun, President Moon Jae-in with his wife, and Park Won-soon (Mayor of Seoul) and Amb. Harry B. Harris Jr. In May 2016, Yi Seok became the brand ambassador of Liancourt Rocks by Ulleung County.