Song Byung-joon and others who led Isshinkai and supported the theory as to Japan's annexation of Korea assumed office as adviser of Chusuin (a government office in Korea) of Chosen Sotoku-fu and kept affecting on the Korean politics after the annexation, and later Song Byung-joon was given a title of count for his achievement.
一進会を率い、韓日併合論を説いた宋秉畯らは朝鮮総督府中枢院顧問となり、合併後の朝鮮の政治にも大きく影響を与え続け、その後、その功績により宋秉畯には伯爵位が与えられた。