The major Korean participants in the illegal trading were residents around Sanpo, local merchants, and major merchants in Hansung, and the relationship between the residents around Sanpo and kokyowa was specially described as follows:
朝鮮側における密貿易の担い手は三浦周辺住民・地元商人・漢城大商であったが、中でも三浦周辺住民と恒居倭の癒着ぶりは「相親相愛,不啻如兄弟,言語飮食,利害緩急,無不共之。」