The Xinhai Revolution, also known as the Chinese Revolution or the Revolution of 1911, was a revolution that overthrew China's last imperial dynasty (the Qing dynasty) and established the Republic of China (ROC). The revolution was named Xinhai (Hsin-hai) because it occurred in 1911, the year of the Xinhai (辛亥; 'metal pig') stem-branch in the sexagenary cycle of the Chinese calendar.