sentences:  Other more renowned publishers like "Chūo Kōron" (Central Review), "Kaizō" (Reconstruction), and "Miyako Shinbun" also published works by proletarian authors, even those who were members of the Communist party.Author Korehito Kurehara traveled secretly to the Soviet Union in 1930 for the Profintern conference, and upon his return in 1931, he started agitating for the democratization of literary organizations.This sparked the drive to organize literary circles in factories and rural areas, creating a new source of readers and writers there.