The Opium War and the signing of treaty of nanking made China a semi-society. The Second Opium War and the signing of Tianjin Treaty and Beijing Treaty further deepened China's bi-semi-society. The Sino-Japanese War of 1894-1895 and the signing of treaty of shimonoseki greatly deepened the degree of semi-colonization of China. Eight-Nation Alliance's invasion of China and the signing of the Xin Chou Treaty marked the complete establishment of China's semi-society.