In order to strengthen the Party's leadership over the mass work in the Kuomintang-controlled areas and the united front work, the CPC Central Committee set up the Changjiang Bureau and the Southern Bureau in Wuhan and Chongqing. Shown here are Zhou Enlai, Qin Bangxian, Ye Jianying and Dong Biwu, leaders of the Southern Bureau, with Lin Boqu and Xu Teli in Chongqing.