March 21, 2023
https://www.chosun.com/national/weekend/2023/03/18/VFVTBTVO6ZE4DGZZ6Z3ZDP4BDA/
The article (in Korean) highlights Ryu Songnyong: Chancellor of Choson Korea, a biography by Choi Byonghyon. Also mentioned is a supporter of the book, Ryu Jin Roy, a thirteenth-generation descendant of Chancellor Ryu.