https://en.wikipedia.org/wiki/Sino-Japanese_War
Sino-Japanese War most often refers to: . The First Sino-Japanese War (1894–1895), between China (Qing Dynasty) and Japan (Empire of Japan), primarily over control of Korea; The Second Sino-Japanese War (1937–1945), began between China (Republic of China) and Japan (Empire of Japan) in 1937, eventually becoming part of World War II in 1941 when China joined the Allies.