 The group was also relatively young; Pak Yung-hio came from a prestigious lineage related to the royal family, was 23, Hong was 29, Seo Gwang-beom was 25, and Soh Jaipil was 20; with Kim Ok-gyun being the oldest at 33.All had spent some time in Japan, Pak Yung-hio had been part of a mission sent to Japan to apologize for the Imo incident in 1882.He had been accompanied by Seo Gwang-beom and by Kim Ok-gyun, who later come under the influence of Japanese modernizers such as Fukuzawa Yukichi.