護法運動
In 1920, the anarchist military leader Chen Jiongming launched an attack on the Guangxi clique, which had taken over the Constitutional Protection Junta in Guangzhou. Chen recaptured Guangdong for the KMT and even went on to occupy Guangxi, seeing the ultimate dissolution of the Guangxi clique. Chen subsequently invited Sun Yat-sen to return to Guangzhou, where a parliament was reconvened and a new government was established, beginning the Second Constitutional Protection Movement. But as the government was unrecognized and lacking in numbers, Chen invited anarchists, communists and federalists to join the movement, to the chagrin of Sun. Chen also became instrumental in organizing the labour movement of South China, securing workers with the right to collective bargaining. During the Guangzhou seamen's strike, Chen helped to settle the strike, with the employers capitulating to the demands of wage increases.