Chinese dialects, commonly known as local dialects, are only used in certain areas. It is not another language independent of the national language, but only the language used in some areas. Most dialects in modern Chinese have gone through a long process of evolution and gradually formed.
There are many factors that form Chinese dialects, such as social, historical and geographical factors, such as population migration, mountain and river barriers and so on. There are also factors that belong to the language itself, such as the imbalance of language development and the mutual contact and influence between different languages.
Extended data
Among several dialects of modern Chinese in China, the northern dialect can be regarded as the development of ancient Chinese in the vast northern region after thousands of years, while the southern dialect is gradually formed by the continuous southward migration of northern residents in history.
The northern Han people went south several times on a large scale, bringing ancient northern Chinese in different periods, spreading to various regions in the south of the Yangtze River, and gradually forming six dialects that are obviously different from each other.