During the Japanese occupation of Korea (1910–1945), the Japanese saw chǎomǎmiàn in Chinese restaurants in Korea and named it chanpon, as the white soup seemed similar to the soup of chanpon to their eyes.
During Japan's rule over Korea (1910–1945), when Japanese encountered chǎomǎmiàn in Korean Chinese eateries, they dubbed it chanpon due to its resemblance to the chanpon soup in appearance.