The Second Opium War was 1856 to 1860. With the support of Russia and the United States, Britain and France jointly launched a war of aggression against China.
Eight-Nation Alliance's war of aggression against China refers to 1900. On May 28th, it was an armed war of aggression against China composed of eight major countries, namely, the British Empire, the United States of America, the Third Republic of France, the German Empire, the Russian Empire, the Japanese Empire, the Italian Kingdom and the Austro-Hungarian Empire.
The Sino-Japanese Sino-Japanese War of 1894-1895 was a war of Japanese aggression against China and Korea at the end of 19. According to China's calendar, 1894, the time when the war broke out was the Sino-Japanese War, so it was called the Sino-Japanese War.
War of Resistance against Japanese Aggression refers to China's all-out national war against Japanese aggression during the Second World War in the middle of the 20th century. The time is fourteen years, starting from the September 18th Incident of 193 1 and ending at 1945.