The Tongmenghui, also known as the Chinese United League, United League, Chinese Revolutionary Alliance, Chinese Alliance and United Allegiance Society, was a secret society and underground resistance movement founded by Sun Yat-sen, Song Jiaoren, and others in Tokyo, Japan, on 20 August 1905. It was formed from the merger of many Chinese revolutionary groups in the late Qing Dynasty.
The Tongmenghui was created through the unification of Sun Yat-sen's Xingzhonghui (Revive China Society), the Guangfuhui (Restoration Society) and many other Chinese revolutionary groups. Among the Tongmenghui's members were Huang Xing, Li Zongren, Zhang Binglin, Chen Tianhua, Wang Jingwei, Hu Hanmin, Tao Chengzhang, Cai Yuanpei and Qiu Jin.
In 1906, a branch of the Tongmenghui was formed in Singapore, following Sun's visit there; this was called the Nanyang branch and served as headquarters of the organization for Southeast Asia. The members of the branch included Wong Hong-kui (黃康衢; Huang Kangqu), Tan Chor Lam (陳楚楠; Chen Chu'nan; 1884-1971)  and Teo Eng Hock (張永福; Zhang Yongfu; originally a rubber shoe manufacturer). Tan Chor Lam, Teo Eng Hock and Chan Po-yin (陳步賢; Chen Buxian; 1883-1965) started the revolution-related Chong Shing Chinese Daily Newspaper (中興日報, 中興 meaning China revival), with the inaugural issue on 20 August 1907 and a daily distribution of 1,000 copies. The newspaper ended in 1910, presumably due to the Xinhai Revolution in 1911. Working with other Cantonese people, Tan, Teo and Chan opened the revolution-related Kai Ming Bookstore (開明書報社, 開明 meaning open wisdom)  in Singapore. For the revolution, Chan Po-yin raised over 30,000 yuan for the purchase and shipment (from Singapore to China) of military equipment and for the support of the expenses of people travelling from Singapore to China for revolutionary work.
After Shanghai occupied by the revolutionaries in November 1911, the Toungmenhui's moved its headquarters from Tokyo to Shanghai. After the Nanjing Provisional Government was established, the headquarters was moved to Nanjing. 20 January 1912, a general meeting was held in Nanking with thousands of members attending. Hu Hanmin, who represented the Provisional President Sun Yat-sen, moved a motion to changed the Tongmenghui oath to "overthrow the Manchu government, consolidate the Republic of China, and implement the Min Sheng Chu I". Wang Jingwei was elected as Chairman, succeeding Sun. Wang resigned from the following month and Sun who had stepped down as president resumed the chairmanship.
After the establishment of the Republic of China. Tongmenghui was transformed into a political party on 3 March 1912, in preparation to participate in the constitutional and parliamentary activities and issued a new constitution with 34 articles, 10 more than when it was a secret society. The leadership election was held on the same day, with Sun Yat-sen elected as Chairman, Huang Xing and Li Yuanhung as Vice-Chairmen. In May 1912, Tongmenghui moved its headquarters to Beijing. At that time, Tongmenghui was the largest party in China, with branches in provinces such as Guangdong, Szechuan, Wuhan and cities including Shanghai, Hangzhou, Suzhou, Anqing, Fuzhou and Tianjin, and membership of about 550 thousands. In August 1912, the Tongmenghui formed the nucleus of the Kuomintang, the governing political party of the republic.
Slogan and motto
In 1904, by combining republican, nationalist, and socialist objectives, the Tongmenghui came up with their political goal: to expel the Manchu, to revive Zhonghua, to establish a Republic, and to distribute land equally among the people. (驅除韃虜, 恢復中華, 創立民國, 平均地權 Qūchú dá lǔ, huīfù Zhōnghuá, chuànglì mínguó, píngjūn dì quán). The Three Principles of the People were created around the time of the merging of Revive China Society and the Tongmenghui.
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