What language family does Shanghai dialect belong to? The Chaoshan dialect spoken by my classmates is not like Cantonese, so I don't know which language family it belongs to.

Shanghai dialect belongs to Wu dialect, and belongs to the same language family as most dialects in Zhejiang province and southern Jiangsu dialect.

Chaoshan dialect, commonly known as Chaozhou dialect, is a Chaoshan film belonging to Minnan dialect. Although Chaoshan area is located in Guangdong Province, it is very different from Cantonese. Chaoshan ancestors had a close relationship with Minnan people. They all moved from the Central Plains (Luoyang, Henan) to southern Fujian (Zhangzhou, Quanzhou and Xiamen), and some later moved to Chaoshan area, Leizhou Peninsula and Hainan Island. Because of living in different places, there are differences in local dialects, forming today's Minnan dialect, Chaozhou dialect, Leizhou dialect and Hainan dialect.

I am a Singaporean Chinese, and my ancestral home is Longxi, Zhangzhou, Fujian. Most of us Singaporeans are immigrants and descendants from South China in the 20th century, so we know a little about the history of southern dialects.