The term "gung market" refers to a person with the ability to make bows and arrows, and the person who makes bows is referred to as "gungjang" and "the person who makes arrows" is referred to as "mayor." On September 13, 1971, Korea designated Kim Jang-hwan as "Gung Market Important Intangible Cultural Property No. 47" and continued its tradition.

He joined his family in connection with the late Kim Jang-hwan and devoted himself to making the palace for more than 40 years. Currently, he has raised two students to produce the palace in Ansan and Gwangju, Gyeonggi Province, respectively.