In February 1923, Sun Yat-sen returned to Guangzhou where he immediately set up a headquarters of a new revolutionary government. Soviet Russia sent Michael Borodin (1884-1951) and some military advisers to help him, and a provisional central committee of the Kuomintang which included a number of Communists was organized.

The Chinese Communist Party held its Third National Congress in Guangzhou in June 1923, and the question of forming a revolutionary united front with the Kuomintang was discussed. The congress affirmed Sun Yat-sen's contribution to the Chinese revolution and resolved to help him in reorganizing the Kuomintang and establishing cooperation between the two parties.

The gap between Sun Yat-sen and the West continued to widen. When he threatened in December to seize the customs revenues in the port of Guangzhou, the powers staged a naval demonstration to preserve the status quo. Thwarted, Sun angrily stated, "We no longer look to the Western powers.

Our faces are turned toward Russia."

In January 1924, Sun Yat-sen called the First National Congress of the reorganized Kuomintang in Guangzhou. Among the Communists who attended were Li Dazhao, Mao Zedong and Qu Qiubai (Chu Chiu-pai, 1899-1935). The congress adopted the anti-imperialist, anti-feudal policy advanced by the Communists, agreed to absorb individual Communists and Socialist Youth League members into the Kuomintang, and decided to reorganize the Kuomintang into a revolutionary alliance of workers, peasants, the petty-bourgeoisie and national bourgeoisie. In this way, new blood was infused into the ranks of the Kuomintang and Sun Yat-sen became the leader of a revitalized revolutionary movement.

In 1923, the Chinese Communist Party decided to establish a revolutionary united front. It helped Sun Yat-sen reorganize the Kuomintang (the old Tong Meng Hui was reorganized into the Kuomintang after the Revolution of 1911). With the formation of the Kuomintang-Communist united front, the Chinese Communist Party mobilized the masses on a broad scale, and the revolutionary situation developed vigorously. It continued to rise after the death of Sun Yat-sen in 1925. Organized and energized by the Party, the revolutionary forces swept away the reactionary forces in Guangdong, and in 1926 the Northern Expeditionary War began. Supported by the masses, the revolutionary army defeated the counter-revolutionary armies of the Northern warlords and occupied central and south China. The worker-peasant movement grew rapidly throughout the country.

Seeing that the warlord regime they supported was tottering in the sweep of the revolutionary tide, the imperialist forces hastily looked for new agents and finally picked Chiang Kai-shek who had worked his way into the position of Commander-in-Chief of the National Revolutionary Army". In April 1927, at a crucial moment in the forward advance of the Northern Expeditionary War, Chiang staged, with the active support of the big bourgeoisie and landlord class, a counter-revolutionary coup d'etat against the Chinese Communist Party and the revolutionary people.

In June 1923 Mao Zedong attended the Third National Congress of the Chinese Communist Party, which adopted the policy of cooperation with the Kuomintang, then led by Dr Sun Yat-sen, for the purpose of forming a national anti-imperialist and anti-feudal united front to include all democratic classes. The congress also decided that all members of the Communist Party were to join the Kuomintang as individuals. Elected a member of the Central Executive Committee by the congress, Mao Zedong began to play a role in the work of the central leadership. After the Kuomintang-Communist cooperation was brought about, he was elected an alternate member of the Central Executive Committee of the Kuomintang at its First and Second National Congresses, held in January 1924 and January 1926.

For 40 years I have devoted myself to the cause of the people's revolution with but one end in view: the elevation of China to a position of freedom and equality among the nations. My experience during these 40 years has convinced me that to attain this goal we must bring about an awakening of our own people and ally ourselves in common struggle with those people of the world who treat us as equals.

I leave behind me a party which, as has always been my wish, will be bound up with you in the historic work of the final liberation of China and other exploited nations from the imperialist order. By the will of fate, I must leave my work unfinished and hand it over to those who, remaining true to the principles and teachings of the party, will show themselves to be my true followers.

Taking leave of you, dear comrades, I want to express the hope that the day will come when the U.S.S.R. will welcome a friend and ally in a mighty, free China, and that in the great struggle for the liberation of the oppressed peoples of the world, both these allies will go forward to victory hand in hand.

In April the counter-revolutionary movement had begun in Nanjing and Shanghai, and a general massacre of organized workers had taken place under Chiang Kai-shek. The same measures were carried out in Guangzhou. On May 21 the Xu Kexiang Uprising occurred in Hunan. Scores of peasants and workers were killed by the reactionaries. Shortly afterward the 'Left' Kuomintang at Wuhan annulled its agreement with the Communists and 'expelled' them from the Kuomintang and from a Government which quickly ceased to exist.

Many Communist leaders were now ordered by the Party to leave the country, go to Russia or Shanghai or places of safety. I was ordered to go to Sichuan. I persuaded Chen Duxiu to send me to Hunan instead, as secretary of the Provincial Committee, but after ten days he ordered me hastily to return, accusing me of organizing an uprising against Tang Shengzhi, then in command at Wuhan. The affairs of the Party were now in a chaotic state. Nearly everyone was opposed to. Chen Duxiu's leadership and his opportunist line. The collapse of the entente at Wuhan soon afterward brought about his downfall.

After setting up his military headquarters at Nanchang, the capital of Jiangxi Province, Chiang Kai-shek considered himself strong enough to defy the authority of the revolutionary Nationalist government at Wuhan, which was then dominated by Kuomintang left-wingers (including Mme. Sun Yat-sen) and Communists. In January 1927, he demanded that the government be moved from Wuhan to Nanchang, where he was in complete control. In reply, the central committee of the Kuomintang at Wuhan took away his leading positions in the party, government and army in an attempt to prevent him from seizing all power.

Bankers from Shanghai, politicians representing various warlord governments and the agents of foreign imperialists all converged on Nanchang to offer Chiang their help. In secret talks he was promised a loan of 60,000,000 Chinese dollars if he would break with the Communists and the Soviet Union and suppress the peasants and workers. Chiang quickly agreed.

In the early hours of April 12, 1927, thousands of thugs from the underworld Green Gang came out of the International Settlement disguised as workers to attack the workers' armed militia. Pretending to oppose "internal dissension among the workers", Chiang Kai-shek ordered his troops to disarm the workers and occupy the headquarters of the General Trade Union, where a spurious union composed of underworld figures was immediately set up. Next day the Shanghai workers called a mass rally and demanded the return of their weapons. Unaware that Chiang Kai-shek had turned against the revolution, they went to the General Headquarters of the Northern Expeditionary Army to present their petition, only to be mowed down by machine-gun fire. The blood of hundreds of workers stained the rain-washed streets of Shanghai red.