 With the failure of the Guangzhou Uprising however, the Communist Party was largely diminished in their influence, unable to launch another major urban offensive.In KMT historiography, the event is occasionally referred to as "April 12 Purge" (四一二清黨), while the Communist historiography refers to the event in the form of "April 12 Counter-revolutionary Coup" (四一二反革命政變) or "April 12 Massacre" (四一二慘案).The roots of the April 12 Incident go back to the Kuomintang's alliance with the Soviet Union, formally initiated by KMT founder Sun Yat-sen after discussions with Soviet diplomat Adolph Joffe in January 1923.