There were three Jisos in Cheongsong that produced paper as a traditional process: Jisori in Andeok-myeon, Misa-ri in Pacheon-myeon, and Jungpyeong-ri. Gamgok Village in Singi 2-ri, Pacheon-myeon, Cheongsong-gun, Gyeongsangbuk-do has long been known as a paper village because of its many oak trees and clear water.

By the 1920s, more than 20 households in this village produced hanji, and residents who did not make a living also made it a side job. However, the supply of glass windows drastically reduced the demand for glassware, and modernized various rituals used mainly for hanji, resulting in a sharp drop in the consumption of hanji, which greatly reduced the Hanji battle.

In such a difficult situation, Yi Sang-ryong, the holder of the Seondae function, moved to Songgang-ri to continue his family business, which began on the day of his transfer from the source of the Five Dynasties, and was designated as Gyeongsangbuk-do Intangible Cultural Heritage No. 23 Cheongsong Hanji.

His eldest son, Lee Ja-seong, is currently serving as the owner of the Cheongsong Hanjijang function, taking over the family business. Samchejeong Pavilion, the ritual house of the Byeokjin Yi Clan in Gamgok Village, Shin Ki-ri, is the ritual house and pavilion of the three brothers, Lee Seok-il, Gamcheon Lee Jae-il and Seokcheon Lee Hyang-il, who started the family business.

Recently, the demand for traditional Korean paper has been increasing due to the use of hwaseon paper, possession, books, and wallpaper used by painters. Yi Ja-seong, the holder of the function of Cheongsong Hanjijang, Gyeongsangbuk-do Intangible Cultural Property No. 23, does not use imported mulberry trees, but collects and uses raw materials from the area of Cheongsong-gun, the birthplace of the mulberry tree, and Yecheon Yonggung.

Lee Ja-seong not only built 6,000 square meters of mulberry field near the workshop, but also created Cheongsong Hanji Experience Center to spread Cheongsong Hanji