I worked as the curator of the Cheongju Early Printing Museum and am currently in charge of research and development / education promotion related to UNESCO Memory of the at UNESCO ICDH. I received a Ph.D. in Korean Language & Literature and Department of Library and Information Science, and my major research areas are Jikji and Korean moveable metal type printing technology. For a long time, I worked with the BNF, the Gutenberg Museum, the Plantin-Moretus Museum in Belgium, the Japanese Museum of Print, and others. Major studies include Jikji Research; Jikji, Talks; and Research of Goryeo period Moveable Metal Type.