The Fourth National Congress of the Chinese Communist Party was held in Shanghai from January 11 to 22, 1925. The central question discussed was how the Party should strengthen its leadership over the steadily rising revolutionary movement. The congress analysed the roles of the different classes in Chinese society in the national revolutionary movement, pointed out the importance of leadership by the proletariat and of the worker-peasant alliance, made a preliminary sum-up of the experience gained and lessons learned in the year that had elapsed since the start of Kuomintang-Communist co-operation, and adopted separate resolutions on the national revolutionary movement, the workers' movement, the peasants' movement, the youth movement, the women's movement, the organizational question and propaganda work. Thus it made organizational preparations for a new upsurge of the mass struggle.