It's huge. The full name of Nanfang Bureau is Central Nanfang Bureau. It was a secret organization established by the Central Committee in Chongqing during the Anti-Japanese War. With Zhou Enlai as the secretary, on behalf of the central unified management of the Kuomintang areas, enemy-occupied areas and overseas party organizations. He has made great contributions to the party, the people, the country and the world, and won a lofty historical position for himself.