However, it's important to note that China is a vast and diverse country with numerous regional languages and dialects. Some of the other languages spoken in China during WWII include:
* Cantonese: Widely spoken in southern China, particularly in Guangdong and Hong Kong.
* Wu: Predominantly spoken in the Yangtze River Delta region, including Shanghai.
* Min: A group of languages spoken in southeastern China, including Fujian and Taiwan.
* Hakka: A language spoken by a large ethnic group with a unique dialect, distributed across China.
* Other languages: There were also numerous other minority languages spoken in China, such as Tibetan, Mongolian, and Uyghur.
It's also worth mentioning that Japanese was used in areas of China occupied by the Japanese Imperial Army during the war.
While Mandarin was the dominant language, the other languages and dialects continued to be spoken within their respective regions. The diversity of languages in China remained a complex reality even during the war.