The chase from Hwando to South Okjeo took the two parties across the Yalu River into North Korea. The precise route of the chase may have passed by present-day Kanggye, from where there are two possibilities: one heading east through the Rangrim Mountains then south to present-day Changjin; the other following the Changja River south then turning east to reach Changjin. From Changjin, the pursuer and the pursued followed the Changjin River (長津江) south until they reached the vast and fertile Hamhung plains, where the river flowed into the East Korea Bay. It was here in Hamhung that the South Okjeo people thrived, and thus King Dongcheon came here for refuge. When Wang Qi's army arrived, however, the Okjeo tribes were all defeated, with 3,000 tribesmen killed or captured. The king fled again, and the Wei army turned toward North Okjeo.