On September 20 of the same year, an incident occurred: this Unyo approached Ganghwa Island, which was the stronghold base near the capital Hanseong, and fought for three days insisting that she had been fiired, then on 22nd, she attacked the gun batteries and seized Yeongjong Island.
この雲揚が同年9月20日首都漢城に近い要塞地帯であった江華島に接近し、発砲されたとの理由で3日間にわたり戦闘し22日には永宗島の砲台を攻撃、占領する事件が起きた。