 Hamidhan remained as an editor and was under intense pressure from the occupation forces, receiving several warnings for his writings.In 1945 Hamidhan was chosen by the Japanese as a representative of Borneo at the Preparatory Committee for Indonesian Independence (Panitia Persiapan Kemerdekaan Indonesia, or PPKI) in Jakarta (renamed during the occupation).Before leaving, he spoke with local figures regarding their hopes and aspirations for an independent nation.