Why do people in Jiangxi speak Cantonese?

The reason why Jiangxi people can speak Cantonese is because of their accent. According to the query of relevant information, Jiangxi people, also known as Gan people, broadly speaking refer to the place where they have lived for a long time, where their parents have lived for a long time, where their parents were born, where they were born, where their ancestral home is, where they are registered, where they have lived for a long time, and where they have worked for a long time. In Jiangxi Province, China (including people from 11 prefecture-level cities such as Nanchang, Jiujiang, Ganzhou, Yichun, Shangrao, Jingdezhen, Ji'an, Fuzhou, Pingxiang, Xinyu, and Yingtan), groups or individuals who are considered or identified as Jiangxi people, in a narrow sense It is said to refer to the entire population in Jiangxi Province today, that is, individuals with Jiangxi household registration.