The Tongmenghui of China (or T'ung-meng Hui, variously translated as Chinese United League, United League, Chinese Revolutionary Alliance, Chinese Alliance, United Allegiance Society, 中國同盟會) was a secret society and underground resistance movement founded by Sun Yat-sen, Song Jiaoren, and others in Tokyo, Japan, on 20 August 1905.[1][2] It was formed from the merger of multiple Chinese revolutionary groups in the late Qing dynasty.