In 1939, Japanese Government-General of Koreas order Japanese Sōshi-kaimei. he was to propose for postpone application, because Korean nationals emotion. that acceptable, Japanese Government-General of Korea was one years postpones. In May 1940, his familys was Japanese Government-General of Korea conference for decision, familyname for Ito(이토;伊東). also coercive distraint Sōshi-kaimei for him. his name Ito Chiko.