Tongmenghui
The Tongmenghui of China (Chinese: 中國同盟會; pinyin: Zhōngguó Tóngménghuì) was a secret society and underground resistance movement founded by Sun Yat-sen, Song Jiaoren, and others in Tokyo, Empire of Japan, on 20 August 1905, with the goal of overthrowing China's Qing dynasty. It was formed from the merger of multiple late-Qing dynasty Chinese revolutionary groups.