In early 1928 Chiang Kai-shek again took the post of commander-in-chief of National Revolutionary Army, hoping to further solidify his power in Kuomintang (KMT). He divided China into five main zones, namely Southern China, Central China, Northern China, Northeastern China and Northern Fortification, and launched the nationwide rearrangement of party affairs. The first target of his attack was his top opponent in the party – "Kuomintang Reorganization Society. "The implementation of his attack was divided into three stages. In the first stage, he selected loyal party members from the Central Headquarters in Nanjing to act as the party affair rearrangement commissioners in different local party offices. They were appointed to eliminate the members of "Kuomintang Reorganization Society" who held views different from Chiang's. In the second stage, he formulated the related laws and regulations to meet the needs of his move, so as to take them as the legal basis of investigation and arrest. In the third stage he judged the situations of different local party offices, and then ordered the major military and political officers in the districts directly under the jurisdiction of KMT Government or those having submitted themselves to the National Government to make use of their authorities in the party, the political circle and the army to severely suppress the organization and activities of "Kuomintang Reorganization Society." Then the local party offices reported the acquired names of the members of "Kuomintang Reorganization Society" to the Headquarters for punishment, depending on the severity of different circumstances. After this comprehensive and severe purge, the power of "Kuomintang Reorganization Society" attached to the various local KMT offices was tremendously weakened. The society no longer has sufficient local foundation to assist the central leader of "Kuomintang Reorganization Society," Wang Jing-wei, or oppose the leading position of Chiang Kai-shek in the party.