[citation needed] Choe Chang-ik later studied at Tokyo's Waseda University in the Department of Economics and Politics where he organized a student union and continued his activism.

This included secretly infiltrating areas in Korea such as Ganggyeong, Jeonju, Okgu, and Gunsan, where he went on a lecture tour to share his ideas on socialism and equality.

Eight months later he helped found the Socialist Alliance (an organization not affiliated with the Seoul Youth Association) and was elected to serve as a member of its executive committee.

In 1926, Choe and Park Du-hui, a member of the Shinmin group, were selected to attend a communist conference in Vladivostok of Russian far east.

In May 1938, he became the commander of Choson uiyongdae (조선의용대), which was Kim Won-bong's Korean National Revolutionary Party's Military Organisation, but he complained that it was funded by Chiang Kai-shek's Kuomintang.

[citation needed] In January 1941, with funding from the Chinese Communist Party, and later with Lee Gunwu, Mu Chong founded the "Hebei Korea Youth Federation" in Jindong.

In September 1945, he was appointed to the Communist Party of Korea's Political Committee, and in December he returned to Pyongyang with Kim Tu-bong and Mu Chong.

[citation needed] Ambassador Ianov and Choe Chang-ik discussed the visit of the DPRK government delegation to Eastern Europe and the USSR (east bloc), and the policies of the Korean Workers' Party.